a group of organisms that can breed and produce fertile offspring is known as a ...
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Hope this helps
Related Questions
6a. Fossil fuel burning contributes the most to global warming because: 1. It adds CO2 to the earth's atmosphere It adds hydrogen to the earth's atmosphere 6b. "subsidy" from governments for fossil fu
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Answer:
Explanation: option 1 . adds CO2 to the earth's atmosphere is the correct answer.
since fossil fules are rich in carbon dioxide wich is a green house gas .
effects the atmosphere and causes global warming.
Name three important needs for water
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Answer:
for living beings to drink, to grow crops, a place for living for fishes and such
Answer:
For us to drink so we can survive, for fish to swim liek lakes and stuff , and so crops can grow
Explanation:
Organisms that depend on the energy stored in chemical bonds by other organisms for their food energy are called ____________. Select one or more: a. chemotrophs b. heterotrophs c. oligotrophs d. autotrophs
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Organisms that depend on the energy stored in chemical bonds by other organisms for their food energy are called heterotrophs.
Heterotrophs cannot synthesize their own organic molecules from inorganic sources like carbon dioxide and water, unlike autotrophs.
They rely on consuming and digesting complex organic compounds, such as carbohydrates, proteins, and lipids, to obtain the necessary energy and nutrients for survival. They obtain these organic compounds by feeding on other organisms, either by predation, parasitism or by consuming dead organic matter (decomposers or detritivores).
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Read each of the sentences that describe what happens either during mitosis or meiosis. Drag each sentence into the correct box.
Each replicated chromosome pairs with its corresponding homologous chromosome.
Tetrads form and crossing-over sometimes occurs.
Paired homologous chromosomes line up across the center of the cell.
Four haploid daughter cells form that are not identical to the parent cell.
Homologous chromosomes do not pair.
One row of chromosomes lines up at the center of the cell.
The cell nucleus divides only once.
Two diploid daughter cells form that are identical to the parent cell.
Which are in mitosis and which are in Meiosis?
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This ruling explains what wakes during meiosis. Copied chromosomes, which are made up of two sister chromatids, mate with their homologous counterparts during meiosis. Synopsis, sometimes referred to as this pairing takes place during Prophase I of Meiosis I.
During mitosis, every chromosome that has been copied pairs with a homologous chromosome.
In the cell's center, paired homologous chromosomes are aligned in a straight line.
The center of the cell is lined up with one row of chromosomes.
One division occurs in the cell nucleus.
When this happens, the parent cell divides into two diploid daughter cells.
Meiosis: Tetrads may develop and crossing-over happens.
A total of four non-identical haploid daughter cells are produced.
Chromosomes that are identical do not pair.
Meiosis is a specialized type of cell division that produces four haploid daughter cells with genetic variation. Mitosis is the process of cell division that produces two identical diploid daughter cells.
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Meiosis is significant within a population because it increases the –
a
amount of genetically modified organisms
b
number of new alleles available
c
genetic variations in the population
d
number of mature males
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Answer:
Letter a amount of genetically modified organisms
What happens to an atom decays?
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Answer:
If it decays by alpha decay, it will become an atom with 2 fewer protons and 2 fewer neutrons than the original atom. If the atom decays by beta minus (electron) decay, it will become an atom with one less neutron and one more proton than the original atom.
Explanation:
Brainliest Please!
Why was water present as vapour and not liquid?
A: Lower pressure
B: the earth was much hotter than today
C: nobody knows
D: a complex response to the prevailing winds at the time
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Which two of the following organisms are decomposers in this food web?
1. Bolete fungus
2. Persimmon tree
3. Parasol fungus
4. Pine vole
5. Beaver
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Answer:
parasol fungus is the rite answer
show, by drawing an arrow, the direction in which dna will migrate if the positive and negative electrodes are positioned as shown. why will it migrate in that direction?
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DNA will migrate towards the positive electrode when subjected to an electric field.
DNA molecules have a negatively charged phosphate backbone due to the presence of phosphate groups.
When placed in an electric field with the negative electrode on one side and the positive electrode on the other, the negatively charged DNA will be attracted to the positive electrode, causing it to migrate in that direction.
Hence, DNA will migrate towards the positive electrode because of its negative charge, which is attracted to the positive charge of the electrode. To show this with an arrow, you would draw an arrow pointing from the negative electrode towards the positive electrode.
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Oxygen is essential for many forms of life, yet early earth had very little oxygen in the atmosphere. Where did the increase in oxygen come from?.
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Answer:
Literally, it is the waste product of cyanobacteria, also known as blue-green algae.
EXPLANATION
Explanation:
Between two to three billion years ago, Earth's atmosphere started changing.
Organisms living then were doing so anaerobically (without oxygen), but there was a gradual build up of oxygen in the atmosphere - the reason for this, as well as for the percentage of oxygen stabilising at around 21% is still unclear.
What we do know is that tiny organisms known as cyanobacteria (or blue-green algae) would photosynthesise carbohydrates for their nutrition and growth using sunlight, water, and carbon dioxide.
The waste product of photosynthesis, till today, is oxygen.
Over time, this oxygen increased till it reached the levels that we experience today.
The chloroplasts in today's plants are symbiotic cyanobacteria that continue the same process started billions of years ago.
list four different cells found in man and give one function of each.
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Answer:
Epithelial Cells. These cells are tightly attached to one another.
Nerve Cells. These cells are specialized for communication.
Muscle Cells. These cells are specialized for contraction.
Connective Tissue Cells.
Explanation:
I only could do the important 4 sorry but I hope this helps you sorry if it doesn’t help you
what is natural selection not based on
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Answer:
Natural selection is the process by which some organisms in a population survive and reproduce, while others do not, based on their bodies and behaviour. It is one of the processes by which species change from generation to generation, and is a crucial element of the theory of evolution.
Explanation:
Why is the law of gravity an example of a universal law?
A) Gravity exists for masses in a closed system only.
B) Gravity exists between any two masses.
C) Gravity exists between small masses in an open system only.
D) Gravity exists only on the earth and the moon.
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Answer:
B because when you have gravity and earth it pushes down on the earth!
Explanation:
Explanation
Which of the following is the term for cells that do not have a nucleus?
prokaryotic
glycolytic
synthetic
eukaryotic
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what is the role of na /k pumps in maintaining a resting membrane potential? what na /k pumps ' absence would cause? explain your answer.
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For every 2 potassium ions, the na/k pump continuously transfers into the cell, it transfers 3 sodium ions out. As a result, it maintains a large gradient of potassium ions across the membrane. This gradient is the foundation of resting membrane potential.
In the absence of the Na⁺K⁺ ATPase pump, the environment will become hypotonic causing the cell to shrivel. Osmotic balance and membrane potential are maintained in cells by the Na⁺K⁺ ATPase pump. The concentration gradients of sodium and potassium are maintained by the Na⁺ K⁺ ATPase pump, which increases the extracellular concentration of sodium and decreases the intracellular concentration of potassium.
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explain the relationship between sanitation and disease
please tell correct answer
hiii
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Answer:
Poor sanitation is linked to transmission of diseases such as cholera, diarrhoea, dysentery, hepatitis A, typhoid and polio and exacerbates stunting. Poor sanitation reduces human well-being, social and economic development due to impacts such as anxiety, risk of sexual assault, and lost educational opportunities.
EXPLAINATION :
Sanitation refers to public health conditions related to clean drinking water and adequate treatment and disposal of human wastes and sewage. Preventing human contact with faeces is part of sanitation, as is hand washing with soap.
RELATIONSHIP BETWEEN SANITATION AND DISEASE:
a) In our country, a large number of people even today do not have sewerage facilities and thus defecate in open fields, railway tracks, etc. The untreated human excreta thus pollute soil and water sources including the underground water. When this contaminated water is used for drinking, it can cause diseases such as cholera, typhoid, hepatitis, dysentery, etc. which may even lead to death. Therefore, the lack of sanitation resulting in the drinking of contaminated water can cause health problems.
b) If sanitation is there, no disease will occur, but if sanitation is not there various types of disease will occur and spread. So sanitation should be kept to avoid disease
SAMAJ GAYI NA MISS JANVI.
Answer:
I'M ALSO AGREED WITH ABOVE GUY ANSWER
How does hybridization and artificial/selective breeding differ from GMOs?
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Answer: The main difference between GMO and hybrid is that GMO is produced by genetic engineering, altering the genetic material of an organism, whereas a hybrid is produced by cross-breeding of two varieties through artificial mating
Explanation: hope this helps
the myelin sheath is made of a high percentage of ______.
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The myelin sheath is made of a high percentage of lipids, specifically cholesterol and sphingolipids. These lipids make up the insulating layer around nerve fibers, allowing for faster and more efficient transmission of signals throughout the nervous system.
Myelin is essential for proper neurological function, as damage or degradation of the myelin sheath can lead to a variety of disorders such as multiple sclerosis. In addition to its role in nerve transmission, myelin also provides metabolic support to the neurons it surrounds, helping to maintain the health and vitality of these cells. Overall, the high lipid content of myelin is critical for its function and importance in the nervous system.
The myelin sheath is made of a high percentage of lipids, specifically about 70-80%. The remaining 20-30% is comprised of proteins. Myelin is a fatty substance that wraps around the axons of neurons, functioning to insulate and speed up the transmission of electrical signals (action potentials) in the nervous system. The presence of myelin greatly enhances the efficiency of nerve signal transmission and is crucial for the proper functioning of the nervous system.
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4. The temperature in \( \# 3 \) is fresh water's temperature of maximum density. a. lower than b. equal to c. higher than
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The given statement “The temperature in # 3 is fresh water's temperature of maximum density” means that the temperature at point 3 has a density of maximum density compared to other points of fresh water. So, the temperature at point 3 is equal to fresh water's temperature of maximum density. Therefore, the answer is option b. equal to.
Water is known as the only substance on earth that exists in all three forms, i.e., solid, liquid, and gas. Moreover, the density of water is also unique compared to other substances. Density is the property of a substance that measures the relationship between the mass and volume of a substance. The density of water varies with temperature and pressure. So, the density of water is always higher than that of gases but lower than most solids.
The density of fresh water at standard atmospheric pressure is around 1000 kg/m³, whereas seawater has a density of around 1025 kg/m³ at the surface. The density of water at different temperatures: Water has a unique density-temperature relationship, meaning the density of water varies with temperature.
At 4 °C, fresh water has the highest density, and as the temperature rises or falls below this point, the density of water decreases. So, water has an anomalous density-temperature relationship. Hence, b is the correct option.
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Help this is really important!
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Answer:
C) They are both involved in cell division
Explanation:
yup
How many round and yellow seeds and how many round green seed will be produced in F2?
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In order to determine the number of round and yellow seeds and round green seeds that will be produced in F2, it would be necessary to know the genetic makeup of the parents and the specific traits being inherited.
In addition, it would be necessary to know whether the traits are dominant or recessive, as this would affect the inheritance patterns. Without this information, it is not possible to accurately predict the number of round and yellow seeds and round green seeds that will be produced in F2.
In genetics, the concept of dominant and recessive traits is used to describe the inheritance of certain characteristics or traits. A dominant trait is a trait that is expressed in an individual even if they have only one copy of the trait. A recessive trait is a trait that is only expressed in an individual if they have two copies of the trait.
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Potential for Alterations in Body Systems -
Pressure Ulcers, Wounds, and Wound Management: Expected Findings for a Client Who Has a Pressure Ulcer (RM FUND 9.0 Ch 55)
-various types
--suspected deep tissue injury: discoloration of skin
--stage 1: intact skin with an area of persistent, nonblanchable redness
--Stage 2: involves epidermis and the dermis. visible with reddish-pinkish bed without slough or bruising, superficial, and can appear as an abrasion, blister, or shallow crater
-stage 3: damage to or necrosis of subq tissue. appears as a deep crater with or with our exposed muscle or bone
-stage 4: destruction, tissue necrosis, or damage to muscle, bone, or supporting structures. can see sinus tracts, deep pockets of infection, tunneling, undermining, eschar, or slough
-unstageable: eschar or slough obscures the wound. depth of injury is unknown
*monitor all clients often to check skin integrity and fr risk factors that could cause impaired skin integrity
-use Braden or Norton scales
Answers
Expected findings for pressure ulcers include suspected deep tissue injury, intact skin with nonblanchable redness, involvement of epidermis and dermis, damage to subq tissue, destruction of muscle, bone or supporting structures, and obscured wound depth.
Monitoring all clients for risk factors that could cause impaired skin integrity and using scales such as the Braden or Norton scales can help prevent pressure ulcers from developing or progressing. Pressure ulcers, also known as bedsores, can be caused by prolonged pressure on the skin and underlying tissues, as well as by friction, shear, and other factors.
The expected findings for a client who has a pressure ulcer depend on the stage of the ulcer, with stage 1 being the mildest and stage 4 being the most severe. Suspected deep tissue injury, stage 1, stage 2, stage 3, and stage 4 pressure ulcers have different visible characteristics, ranging from persistent, nonblanchable redness to visible damage to subcutaneous tissue, muscle, bone, or supporting structures.
Unstageable ulcers occur when the depth of injury is unknown due to the presence of eschar or slough. Monitoring all clients for risk factors that could cause impaired skin integrity and using scales such as the Braden or Norton scales can help prevent pressure ulcers from developing or progressing.
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use the image to identify each of the labeled regions?
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Answer:
A: DORSAL SIDEB: ANTERIOR ENDC: VENTRAL SIDED: POSTERIOR ENDExplanation:
These are terms specify the position of anatomical structures. They are used to establish a relationship of space or distance between one element and another one. These terms are useful when locating anatomical parts or making comparisons, taking as reference the location of another.
Anterior/ Posterior and Dorsal/Ventral are delimitated with an imaginary linear line that divides the body into two parts.
In the exposed example, we might first compare the dorsal and the ventral part of the orca´s body.
So the imaginary line passes through the orca longitudinally, dividing it into two parts, from the mouth to the caudal fin. The line delimitates the dorsal part -which corresponds to the back of the animal- and the ventral part -which corresponds to the abdominal area-. So, if you need to describe the position of the dorsal fin, for instance, you can say that it is dorsally placed. But if you want to describe the position of the sexual organs, you can say they are in the ventral region.So the A label is pointing to the dorsal side of the orca. And the C label is pointing to the ventral side.
Now the imaginary line is transversal to the orca´s body and divides it in the anterior end/extreme and the posterior end/extreme. If you need to locate the eyes, you might say that they are in the anterior part of the body -the anterior end. And if you need to indicate where is the caudal fin, you can say that it is in the posterior end of the body.The B label is pointing to the anterior end, while the D label is pointing to the posterior end.
So now, let us place both imaginary lines together. The orca´s body is now divided into four parts. You can use this division to be even more specific while making a description. You can say that the blowhole is anteriorly and dorsally. The genitals are posteriorly and ventrally. Flippers are anteriorly and ventrally. And so on with different structures.So take a look at the attached file. You will find every step with the regions and the named structures for a better understanding
How do you think plant cells differ from animal cells
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Answer:
Both animal and plant cells have mitochondria, but only plant cells have chloroplasts. Plants don’t get their sugar from eating food, so they need to make sugar from sunlight. This process (photosynthesis) takes place in the chloroplast. Once the sugar is made, it is then broken down by the mitochondria to make energy for the cell. Because animals get sugar from the food they eat, they do not need chloroplasts: just mitochondria.
Both plant and animal cells have vacuoles. A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles.
Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.
Explanation:
The figure shows a diagram of a typical rod-shaped bacterium. The cell body of the bacterium is represented by an elongated oval shape, like a pill capsule. Attached to one end of the cell body is a long, tail-like structure. Covering the outer surface of the cell body are small, spike-like structures. The cell body is shown as being enclosed by three layers, a thick outer layer, a thin middle layer, and a thin inner layer. In some places, the inner layer is shown projecting through the middle and outer layers to reach the exterior of the cell body. The interior of the cell body is a single chamber that contains a large, ribbon-like structure twisted around itself, a much smaller circular, ribbon-like structure, and many dot-like structures scattered throughout the chamber. The diagram above represents a typical rod-shaped bacterium. Which of the following best describes a feature shown in the diagram that is unique to archaea and bacteria? The organism is surrounded by a cell wall. The organism is surrounded by a cell wall. A The organism contains ribosomes. The organism contains ribosomes. B The organism does not have a nuclear membrane surrounding its genetic material. The organism does not have a nuclear membrane surrounding its genetic material. C
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Answer:
There is no diagram attached to this question, however, it can be answered based on general understanding of the topic. The answer is:
The organism does not have a nuclear membrane surrounding its genetic material.
Explanation:
Living organisms are classified into a large group called DOMAIN, in which the basis of this classification is the possession or not of a membrane-bound nucleus. According to this question, the unique feature of archaea and bacteria is been enquired.
One feature that is unique to them is that "THEY LACK A MEMBRANE-BOUND NUCLEUS THAT HOUSES THEIR GENETIC MATERIAL". Hence, Archaea and Bacteria are both prokaryotes. Their genetic material is found naked in a region in the cytoplasm called NUCLEOID.
The figure is missing. However, the feature that is unique to archaea and bacteria is B. The organism does not have a nuclear membrane surrounding its genetic material.
Archaea and bacteria are both Procaryotes, in other words:
The DNA is not enclosed by a membrane in a nucleus.The DNA is in the cytoplasm in an area called the nucleoid.They are simple structures in comparison with Eukaryotes.Even though they are in different domains since they do not share other characteristics, both lack a nucleus. In other words, they do not have a nuclear membrane surrounding the genetic material.
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look at the structures in the picture below. what function do these structures have?
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During replication, enzymes called ____________________ untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the _______________________.
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Answer:
During replication, enzymes called helicases untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the replication fork.
Explanation:
Replication is the process of multiplication of DNA molecules where, from one molecule, two molecules with the same information as the original can be obtained.. Each new replicated DNA molecule has an original strand and a new strand, so replication is semi-conservative.
For replication to occur, the double strand of DNA must be separated, a process that requires the participation of a group of enzymes called helicases. The helicases are responsible for breaking the hydrogen bonds between the complementary bases of one strand and another.
The DNA strands, when separated, form a zipper-like image, and the point of separation between the two is called the replication fork.
The study of genes is called genetics.
The correct answer is During replication, enzymes called helicases untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the replication fork.
What is replication?Replication is the process of multiplication of DNA molecules where, from one molecule, two molecules with the same information as the original can be obtained. Each new replicated DNA molecule has an original strand and a new strand, so replication is semi-conservative.
For replication to occur, the double strand of DNA must be separated, a process that requires the participation of a group of enzymes called helicases. The helicases are responsible for breaking the hydrogen bonds between the complementary bases of one strand and another.
The DNA strands, when separated, form a zipper-like image, and the point of separation between the two is called the replication fork.
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What is the correct order of events in mitosis?.
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Prophase, prometaphase, metaphase, anaphase, and telophase are the five phases. After telophase, cytokinesis is the final physical cell division and is referred to as the sixth stage of mitosis containing centrosomes.
1. The prophase marks the start of mitosis.
Chromosomes assemble and become apparent.
Spindle fibres originate from centrosomes.
Nuclear membrane shatters as the nucleolus melts.
2. Prometaphase, the second mitotic phase
Chromosomes are still getting smaller.
The kinetochores are discernible at the centromeres.
As microtubules from the mitotic spindle cling to kinetochores, centrosomes move in the direction of their opposing poles.
3. Third mitotic division: metaphase.
Each sister chromatid is connected to a spindle fibre that originates from opposite poles, the mitotic spindle has fully grown, the centrosomes are at the cell's poles, and the chromosomes are lined up at the metaphase plate. Every chromosome is in the centre.
4. Mitosis's fourth stage is anaphase.
Sister chromatids (now known as chromosomes), which were previously bound together by cohesin proteins, separate and are drawn in opposite directions.
The cell lengthens as non-kinetochore spindle fibres grow longer.
5. The fifth stage of mitosis is called telophase.
The nuclear envelope material that surrounds each set of chromosomes decondenses as the chromosomes arrive at opposite poles.
6. The sixth and last stage of mitosis is cytokinesis.
Animal cells: the daughter cells are divided by a cleavage furrow.
A cell plate separates the daughter cells in plant cells.
the splitting of the cytoplasm into the two distinct daughter cells.
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Question 2 of 10
What is the likely effect of increasing the use of fossil fuels?
O A. Pollution levels and their effects will decrease.
B. Global warming will steadily decrease.
C. Biodiversity will decrease in most ecosystems.
D. Ecosystems will become more resilient.
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if a tunicate's pharyngeal gill slits were suddenly blocked, the animal would have trouble _____.
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If a tunicate's pharyngeal gill slits were suddenly blocked, the animal would have trouble respiring and feeding.
What are the tunicate's pharyngeal gill slits?The tunicate's pharyngeal gill slits are a series of structures within this taxonomic group that function in order to make the process of respiration and feeding possible by filtering substances in the aquatic environment.
Therefore, with this data, we can see that the tunicate's pharyngeal gill slits play a fundamental role in filtering substances.
Complete question:
Fill in the blank. If a tunicate's pharyngeal gill slits were suddenly blocked, the animal would have trouble___.
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