Answer:
Explanation:
This experiment was divided into two parts. For the first part of the experiment, the (Exposure to dryness)
was intentionally manipulated. This was the independent variable. The dependent variable observed was the (Earthworm behavior)
.
For the second part of the experiment, the(Exposure to dry odor)
was intentionally manipulated. This was the independent variable. The dependent variable observed was the (Earthworm behavior)
i hope this helped BRAINLY PLZZZ
Answer:
1) exposure to dryness
2) earthworm behavior
3) exposure to strong odor
4) earthworm behavior
Explanation:
I got it right
How does the chemical reaction of ethanol burning relate to the matter and chemical changes that occur in the body when a person exercises?
2
Which of the following is a correct statement
about fossils?
F Only an entire organism can be
preserved as a fossil.
G Fossils provide the only evidence
for evolution.
H Most organisms do not form fossils.
J Only the hard parts of an organism can
be preserved as a fossil.
Answer:
Only the hard parts of an organism canbe preserved as a fossil.
Explanation:
When an organism dies, its soft parts often decay quickly or are eaten by animals. That is why only hard parts of an organism generally leave fossils. These hard parts include bones, shells, teeth, seeds, and woody stems.
The term for the use of microorganisms to restore damaged environments is
A) epidemiology.
B) bioremediation.
C) chemotherapy.
D) serology.
E) ecology.
A subfield of biotechnology called "bioremediation" uses living things like bacteria and microorganisms to clean up contaminated environments.
Utilizing living organisms can remove impurities, pollutants, or toxins from water or soil is known as bioremediation (FAO, 2001).
As a method of decontaminating soil and other habitats, bioremediation mostly makes use of microbes, plants, / microbial or plant enzymes. 2014 publication, Microbial Biodegradation and Bioremediation. The typical principal bioremediators include bacteria, archaea, and fungi [2]. the use of bioremediation, a biotechnological procedure employing microorganisms, to address and eliminate risks associated with various contaminants through environmental biodegradation. Bioventing, land farming, bioreactors, composting, bioaugmentation, rhizofiltration, & biostimulation are a few examples of bioremediation technology. However, not all pollutants may be effectively removed through bioremediation employing microorganisms.
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Can u plz answer it plz plz
i believe its that,hope that helpsss
Answer:
Double helix
Explanation:
What are two strategies China is using to make less of an impact on ecosystems?
Answer:
Two strategies China is using to make less of an impact on ecosystems are:
China has taken steps to dismantle coal-fired power plants, reduce overall emission levels and cut particulate-matter emission rates. Huge progress has been made on air quality, and there are now fewer smoke days in China's largest cities.What are some helpful and harmful examples of dna mutations
Answer:
Examples of helpful mutations embrace HIV resistance, milk sugar tolerance, and colored vision.Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes.What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?
a. oligodendrocytes.
b. astrocytes.
c. Schwann cells.
d. ependymal cells.
The ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid are called ependymal cells.
Therefore, the correct answer is d. ependymal cells. Ependymal cells are found lining the ventricles of the brain and the central canal of the spinal cord.
They have hair-like cilia on their surface that beat in a coordinated fashion to help circulate the cerebrospinal fluid (CSF) through the brain and spinal cord.
They also secrete and absorb CSF, which helps to regulate the composition of the fluid and maintain homeostasis in the CNS.
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Aphids are insects that feed on plant sap. Some ant species feed on the waste produced by aphids. The ants get food and the aphids get protection from other insects. The relationship between the aphids and the ants is an example of _____.
commensalism
parasitism
mutualism
Answer:
C) mutualism
Explanation:
Answer:
c:) mutualism
Explanation:
ASAP I need help please!!!
Name 2 differences between plant and animal cells
Answer:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Plant cells have a cell wall, but animals cells do not. ...
Plant cells have chloroplasts, but animal cells do not. ...
Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles if any are present.
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Explanation:
hope this helps!
Describe a reason why ecosystem stability is important to the life forms in the ecosystem, and why stability in one ecosystem is important for stability in an adjoining one.
Ecosystems:
In biology, ecosystems refer to sets of organisms and their environments. These systems work together in order to provide nutrition at different levels, with one component eating from other levels.
Ecosystem stability is important to the life forms in the ecosystem because it affects their existence. A stable ecosystem has a balanced population of the various species found within.
Ecosystem stability is important to the life forms in the ecosystem because it affects their existence. A stable ecosystem has a balanced population of the various species found within. The presence of the different life forms found within an ecosystem gives it resilience to outside changes. However, an unstable ecosystem can result in the extinction of certain species, which is an important factor in maintaining biodiversity. Additionally, a balanced ecosystem provides food, shelter, and a place to live for different life forms, including humans.Having a stable ecosystem in one area is important for stability in an adjoining one because ecosystems are not isolated from one another. They interact with each other in numerous ways. Animals and plants move from one environment to another, providing vital nutrients and ensuring the exchange of genetic information. In the case of aquatic ecosystems, water moves through different rivers and tributaries. This movement can affect other ecosystems found downstream or even upstream.In conclusion, stability within an ecosystem is crucial for the maintenance of biodiversity, and it ensures the survival of different life forms. It is also necessary for the stable ecosystems that interact with it. Ecosystems provide a habitat for different life forms, and the presence of these life forms is an essential aspect of maintaining a stable ecosystem.
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A characteristic of benign prostatic hypertrophy includes which of the following? (Select all that apply.) Urgency Hesitancy Low back pain Weak urine flow Incomplete bladder emptying
Answer:
Frequent urgency to urinate, difficulty starting urination
Explanation:
PLEASE ANSWER THIS QUICK QUESTION!!! ASAP! WORTH A LOT OF POINTS
What do all tide pool creatures have in common?
Or: What are the main features that all tide pool creatures have in common?
Explanation:
While these small basins at the ocean's edge typically range from mere inches to a few feet deep and a few feet across, they are packed with sturdy sea life such as snails, barnacles, mussels, anemones, urchins, sea stars, crustaceans, seaweed, and small fish.
PLEASE HELP I WILL MARK BRAINLIEST!!!!
A thunderstorm! You see a flash of lightning across the sky. Five seconds later, your hear the thunder. If
lightning and thunder come from the same source, then why don't they occur at the same time?
They do! The time difference is due to the way sound waves and light waves travel. Light travels
extremely fast through the air, 300,000,000 m/s. Sound travels much slower, 343 m/s through air.
Therefore we can see light in an instant, but it takes a while to hear thunder. The speed of light waves and
sound waves depends on the medium through which they travel. Take a look at the data in the image
above.
How do the speeds of sound and light waves compare?
1x
A
B
C
D
Sound waves travel fastest through a dense medium like the solid ground.
Light waves can travel through a vacuum; sound waves cannot.
Light waves cannot travel through a dense material like a solid.
The denser the medium, the faster sound travels.
E
The speeds of light and sound are affected in the same way in different mediums.
Answer: (B)
Explanation: They are asking for a comparison between light waves and sound waves.
A and C is wrong because it only says about sound waves
D only says about sound waves
E is completely wrong because they are affected differently in different mediums.
when do yeast cells switch from aerobic respiration to fermentation?
Yeast will conduct aerobic respiration in the presence of oxygen, which will result in the production of carbon dioxide and water from the breakdown of carbohydrates (a source of sugar).
Fermentation is the process by which yeasts transform carbohydrates into carbon dioxide and alcohol when oxygen is not present in the environment.
When yeast is employed to make bread, the process of aerobic respiration occurs, which results in the production of carbon dioxide that causes the bread to rise. When all of the oxygen in the environment has been consumed, the yeast will transition to anaerobic respiration, which will result in the production of alcohol and carbon dioxide.
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Particles that become planets
Explanation:
The planets in our Solar System are believed to have formed from the same spinning disc of dust that formed the Sun. This disc, called the solar nebula, was composed mainly of hydrogen and helium, but also had other elements in smaller proportions.
Help the Rossis understand how it is that Kai has NF1. Did he acquire it from them, or, was his case spontaneous? Explain your reasoning and, in your explanation, include the following terms or concepts, underline each: genotype phenotype, hom0zygous heterozygous inheritance alleles dominant recessive
Neurofibromatosis type 1, also know as NF1 is a genetic disorder that is caused by gene changes (also called mutations). The NF1 Gene is found on chromosome 17 and it carries the instructions to create a protein called NF! NF1 regulates mitosis, and works to prevent cells from growing and dividing in an uncontrolled way. The cells of individuals with NF1 divide out of control, leading to the creation of tumor. We have found that Kai has one mutation that was detected in the NF1 gene.
Kai may have NF1 Because of the parents may be a carrier The genes we inherit compose our genotype and determine the physical characteristics we possess, our phenotype. Alleles are important for the variations in which the trait can be expressed. The stronger allele is known as the dominant gene, and the weaker allele is known as the recessive gene. A phenotype is an individual's observable traits, such as height, eye color, and blood type.
The genetic contribution to the phenotype is called the genotype. The gene changes can be passed from parent to child, or they can happen on their own. If you have NF1 or NF2, your baby has a 50-percent chance (1 in 2) of inheriting it from you. heterozygous are carriers in recessive genetic disorders a person with recessive alleles but does not display trait, can pass the trait.
When there is two identical alleles of a particular gene that is h.o.m.ozygous and if there is two different alleles of a particular gene or genes, then that is heterozygous.
Neurofibromatosis kind 1, additionally recognise as NF1 is a genetic disease this is due to gene adjustments (additionally referred to as mutations).
The NF1 gene is discovered on chromosome 17 and it includes the commands to create a protein referred to as NF1 regulates mitosis, and works to save you cells from developing and dividing in an out of control way. The cells of people with NF1 divide out of control, main to the advent of tumor. We have discovered that Kai has one mutation that changed into detected withinside the NF1 gene.Kai can also additionally have NF1 Because of the mother and father can be a provider the genes we inherit compose our genotype and decide the bodily traits we possess, our phenotype. What is genetic contribution?The genetic contribution to the phenotype is referred to as the genotype. The gene adjustments may be exceeded from determine to child, or they could occur on their own.
Thus it is clear.
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A typical bacterium is about one thousands of a metre wide. True or false?
Which of the following activities are part of scientific investigations?
A.
communicating
B.
comparing and contrasting
C.
observing
D.
all of these
the answer is D
D.all of these thats the answer
Many male birds will expend A great deal of energy building nests. Females will mate with the males who build the best nest. This is best described as an example of ___.
a) natural selection
b) sexual selection
c) runaway selection
d) an invasive species
e) disruptive selection
Answer:
B
Explanation:
Female birds mate with the males who build the best nest is the example of option b. sexual selection.
Sexual selection is a mode of natural selection in which one sex members choose the mate with the member of the other sex for mating.
These members of the biological sex prefer opposite sex members for species-specific characteristics in individuals of the other sex such as best building nest in birds. Other male birds compete with members of the same sex to get selected by members of the female birds in this instance.Thus, the correct answer is option b. sexual selection as female birds prefers species-specific traits to select their mating partner by best nest building by males.
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Which of the following is true about environmental tobacco smoke (ETS)?
Adults are more heavily exposed to ETS than children.
ETS accelerates the buildup of plaque in the heart and blood vessels.
ETS is responsible for more lung cancer deaths than heart disease deaths
annually.
O ETS has fewer carcinogens, tar, and nicotine than mainstream smoke.
The statement 'ETS accelerates the buildup of plaque in the heart and blood vessels' is TRUE about environmental tobacco smoke (ETS). it is harmful to health.
What is environmental tobacco smoke (ETS)?Environmental tobacco smoke (ETS) refers to the smoke present in an environment due to cigarettes, which may be harmful to health.
It has been shown that environmental tobacco smoke (ETS) contains carcinogenic substances.
Moreover, nocive substances in environmental tobacco smoke (ETS) can also enter the body through respiration and travels in the circulatory system.
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A stream of water holds thriving bacteria if drought conditions caused the stream to dry up how would the bacteria mostly likely respond to survive?
Answer:
4.They would produce endospores.
Explanation:
Answer:
4.They would produce endospores.
Catchphrase:
Wubba lubba dub dub!!
15 POINTS! PLS EXPLAIN! Jose had a 200 mL cup of hot chocolate that was 95* Celsius which was too hot to drink. His mother suggested he add more cold milk to cool it off, so he added 50 mL of milk which was 5* Celsius. What was the approximate temperature of Jose's hot chocolate?
A. 75* celsius
B. 95* celsuis
C. 25* celsuis
D. 5* celsuis
Answer:
A. 75* celsius
Explanation:
:)))
<3
Do good on your test or homework!
The right and left innominate veins combine to form the
The right and left innominate veins combine to form the superior vena cava.
The superior vena cava is a large vein that carries deoxygenated blood from the upper body to the heart's right atrium. The innominate veins, also known as brachiocephalic veins, are responsible for draining blood from the head, neck, and upper extremities. The right innominate vein is shorter and runs more vertically than the left innominate vein, which runs more horizontally. Both veins are formed by the union of the internal jugular and subclavian veins on each side. The superior vena cava is a vital component of the circulatory system and is responsible for delivering deoxygenated blood from the upper body to the right atrium of the heart, where it is then pumped to the lungs to be re-oxygenated. Any damage or blockage to the superior vena cava can have serious consequences, such as difficulty breathing and impaired circulation. Therefore, it is important to maintain proper vascular health and seek medical attention if any symptoms arise.
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skull radiography is most often used in:
Skull radiography is most often used in detection of head trauma.
Skull radiography is the radiographic examination of the bony structures connected to the skull vault. The final resort in trauma imaging in the absence of a CT is frequently plain radiography of the skull, which is rarely sought in contemporary practice. Long after it has been shown to offer little to no meaningful information in such circumstances, skull radiography is still often used to evaluate head injuries.
Both upright and supine patients can be scanned. With Bucky standing straight up, an ordinary X-ray table is used. This enables quick and simple horizontal beam positioning, which is required to show any air-fluid levels in the sinuses or skull.
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The complete question is:
Skull radiography is most often used in ____.
What method do scientists use to trace plant and animal extinctions through Earth's history
Answer:
Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.
Explanation:
How are some protists like plants
Answer:
Plant-like protists are autotrophs. This means that they produce their own food. They perform photosynthesis to produce sugar by using carbon dioxide and water, and the energy from sunlight, just like plants. ... Protists can be unicellular (single-celled) or multicellular (many-celled).
Explanation:
I took the same test on this
which of the following are part of the gut flora?
Gut flora is also referred to as the gut microbiota, which is a complex ecosystem composed of various bacteria, archaea, fungi, viruses, and protozoa.
The digestive tract, including the mouth, esophagus, stomach, small intestine, and colon, is colonized by numerous species of microorganisms that make up the gut flora. There are trillions of bacteria that live in the gut and are involved in a wide range of physiological processes. The following are part of the gut flora:
Bacteroides
Lactobacillus
Bifidobacterium
Eubacterium
Clostridium
Enterococcus
Streptococcus
Fusobacterium
Peptococcus
Peptostreptococcus
Escherichia
Staphylococcus
Micrococcus
Veillonella
Propionibacterium
Proteus
Klebsiella
Citrobacter
Pseudomonas
Haemophilus
Neisseria
Acinetobacter
Gut flora is known to play a crucial role in various metabolic and immunological processes that are essential for the host's overall health and wellbeing. For instance, gut bacteria contribute to the digestion and absorption of food, the synthesis of vitamins and amino acids, the maintenance of gut epithelial barrier function, the regulation of the immune system, and the prevention of colonization by pathogenic microorganisms.
In conclusion, the gut flora is a diverse and complex ecosystem that consists of various microorganisms, including bacteria, fungi, archaea, viruses, and protozoa. The gut flora plays an essential role in various physiological processes, and it includes a vast array of bacterial species, including Bacteroides, Lactobacillus, Bifidobacterium, Eubacterium, Clostridium, Enterococcus, Streptococcus, Fusobacterium, Peptococcus, Peptostreptococcus, Escherichia, Staphylococcus, Micrococcus, Veillonella, Propionibacterium, Proteus, Klebsiella, Citrobacter, Pseudomonas, Haemophilus, Neisseria, and Acinetobacter.
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hurricane lan
Where did lan first come on shore ?
Answer:
On the corner of Florida and then took ac urve and is headed torward Kentucky and Tennessee.
Explanation:
It really scary that the center is gonna go thru Kentucky because that's where I live!!
which organ in the human body is most sensitive to changes in air pressure?
The human ear is the most sensitive organ in the human body when it comes to changes in air pressure. This is because the ear is responsible for detecting sound waves, which are essentially variations in air pressure.
The ear has a complex system of structures, including the eardrum, middle ear bones, and inner ear, that work together to detect and transmit sound waves to the brain. When air pressure changes occur, such as during changes in altitude or weather conditions, these structures are affected and can cause discomfort or pain, especially if the pressure changes are sudden or rapid.
Additionally, changes in air pressure can also affect the balance and equilibrium functions of the inner ear, leading to dizziness or vertigo. Overall, the ear is a highly sensitive organ that plays a crucial role in our ability to hear and maintain balance, and it is important to protect it from damage caused by exposure to loud noises or sudden changes in air pressure.
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A mole is the number of grams of a substance that equals its molecular (or atomic) mass in daltons. There are 6.02×10²³ molecules (or atoms) in 1.0 mole (Avogadro's number; see Concept 3.2 ). The data table shows the "molar ratios" of some of the products from the Miller H₂S experiment. In a molar ratio, each unitless value is expressed relative to a standard for that experiment. Here, the standard is the number of moles of the amino acid glycine, which is set to a value of 1.0 . For instance, serine has a molar ratio of 3.0×10⁻² , meaning that for every mole of glycine, there is 3.0×10⁻² mole of serine. (a) Give the molar ratio of methionine to glycine and explain what it means. (b) How many molecules of glycine are present in 1.0 mole? (c) For every 1.0 mole of glycine in the sample, how many molecules of methionine are present? (Recall that to multiply two numbers with exponents, you add their exponents, to divide them, you subtract the exponent in the denominator from that in the numerator.)
This expression gives us 4.57 × 10²¹ molecules of methionine for every mole of glycine. The answer to part (c) is 4.57 × 10²¹.
a) The molar ratio of methionine to glycine is 7.6 × 10⁻³. This means that for every mole of glycine, there are 7.6 × 10⁻³ moles of methionine.
b) There are 6.02 × 10²³ molecules of glycine present in 1.0 mole of glycine.
c) For every 1.0 mole of glycine in the sample, there are 7.6 × 10⁻³ × 6.02 × 10²³ molecules of methionine present.
Hence, there are 4.57 × 10²¹ molecules of methionine for every mole of glycine.
We are given that the data table shows the "molar ratios" of some of the products from the Miller H₂S experiment. In a molar ratio, each unitless value is expressed relative to a standard for that experiment, where the standard is the number of moles of the amino acid glycine, which is set to a value of 1.0.
We are to determine the molar ratio of methionine to glycine and explain what it means, calculate the number of molecules of glycine present in 1.0 mole and for every 1.0 mole of glycine in the sample, determine how many molecules of methionine are present.
We see that the molar ratio of methionine to glycine is 7.6 × 10⁻³. This means that for every mole of glycine, there are 7.6 × 10⁻³ moles of methionine.
Therefore, the answer to part (a) is 7.6 × 10⁻³.To calculate the number of molecules of glycine present in 1.0 mole, we use Avogadro's number, which tells us the number of molecules in one mole.
Avogadro's number is 6.02 × 10²³. Therefore, the number of molecules of glycine present in 1.0 mole is 6.02 × 10²³ molecules of glycine. Therefore, the answer to part (b) is 6.02 × 10²³.
To determine the number of molecules of methionine that are present for every 1.0 mole of glycine in the sample, we multiply the number of moles of methionine (which is given by the molar ratio of methionine to glycine) by the number of molecules of glycine in 1.0 mole.
This gives us the number of molecules of methionine present. For every 1.0 mole of glycine in the sample, there are 7.6 × 10⁻³ moles of methionine.
Therefore, there are 7.6 × 10⁻³ × 6.02 × 10²³ molecules of methionine for every mole of glycine.
Simplifying This expression gives us 4.57 × 10²¹ molecules of methionine for every mole of glycine.
Therefore, the answer to part (c) is 4.57 × 10²¹.
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