Carry out your own research into the selective breeding of dogs and
the problems it is now causing certain breeds of dogs. Summarize
your findings and give at least 3 examples of affected dog breeds.

Answer:

C.

Explanation:

Animals found in the tundra include the musk ox, the Arctic hare, the polar bear, the Arctic fox, the caribou, and the snowy owl. Many animals that live in the tundra, like the caribou and the semipalmated plover, migrate to warmer climates during the winter.

I hopes it's help :)

Contaminants are any substances that are not naturally present in an environment and have a harmful effect on living organisms.

Contaminants are substances that can be harmful to the environment and living organisms. Contaminants can be naturally occurring, such as minerals, or man-made, such as pollution from factories and industrial sites.

There are many different types of contaminants, and examples include:

1. Chemical contaminants: These are substances that are harmful to living organisms. Examples include heavy metals such as lead, arsenic, mercury, and pesticides.

2. Pathogens: Pathogens are microorganisms that cause disease. Examples include bacteria, viruses, fungi, and parasites.

3. Nutrient contaminants: These are substances that can cause an imbalance of nutrients in an environment. Examples include nitrogen, phosphorus, and chloride.

4. Radioactive contaminants: These are substances that emit radiation. Examples include uranium, plutonium, and radon.

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I'm sorry its A..I didn't read it correctly...

The answer is A- Brain. We can measure brain waves with instruments.

Answer:

The answers are:

carrier proteins → charged amino acid    

Carrier proteins are transmembrane proteins for the facilitated diffusion of charged amino acids across plasma membranes.

osmosis → water molecule

A type of passive transport, osmosis is the diffusion of water molecules in and out of cells.

active transport → calcium moves from low concentration to high concentration

This is the movement of substances across membranes against concentration gradient.

simple diffusion → oxygen

Oxygen molecules enter through membrane by simple diffusion from an area of high to low concentration.

exocytosis → proteins from the Golgi apparatus  

This process of exocytosis is used by cells to release particles that has been packaged by the golgi bodies.

Explanation: Boom

Carrier Proteins is Charged Amino Acid, Osmosis implies to Water Molecule, Active Transport - Calcium moves from low concentration to high concentration, Simple Diffusion - Oxygen, and Exocytosis - Protein from the Golgi Apparatus.

In assisted diffusion, a type of transport in which charged amino acids or other molecules bind to particular carrier proteins in order to traverse the cell membrane, carrier proteins are involved.

The passage of charged amino acids through the membrane is aided by this mechanism.

Osmosis is the flow of water molecules over a membrane that is selectively permeable, caused by variations in solute concentrations.

The movement of substances against a gradient of concentration, usually from a region of lower concentration to one of greater concentration, is referred to as active transport.

In this instance, calcium ions are actively moved utilising ATP energy from low concentration to high concentration areas.

Simple diffusion is the gradient-driven passive migration of molecules from a region of higher concentration to a region of lower concentration.

Due to their small size and nonpolarity, oxygen molecules can freely diffuse through the cell membrane through simple diffusion.

Exocytosis is the process through which cells discharge big molecules, such proteins, to the exterior of the cell from the Golgi apparatus.

The proteins are contained in vesicles that join the cell membrane and discharge their contents outside of the body.

Thus, charged amino acid transport is facilitated by carrier proteins, water molecules are moved by osmosis, calcium is moved against its concentration gradient by active transport, oxygen is moved along its concentration gradient by simple diffusion, and proteins are released from the Golgi apparatus through exocytosis.

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The cross that would indicate that the mutants were in the same complementation group is the cross between pink eye fly x pink eye fly, resulting in purple eye flies.

Complementation is a genetic phenomenon that occurs when mutations in different genes can compensate for each other, resulting in a normal or wild-type phenotype. If the mutants are in the same complementation group, it means that they carry mutations in the same gene or in closely linked genes that affect the same biochemical pathway or cellular process.

1. pink eye fly x white eye fly --> all white eyes: This cross does not provide information about complementation groups, as it involves two different eye color mutants.

2. pink eye fly x pink eye fly --> all white eye offspring: This cross suggests that the mutants are allelic, meaning they carry mutations in the same gene. However, it does not indicate complementation, as all offspring show the same mutant phenotype.

3. red eye fly x red eye fly --> 3:1 ratio: This cross suggests that the red eye trait is dominant, and the 3:1 ratio of red-eyed to non-red-eyed offspring is consistent with Mendelian inheritance. It does not provide information about complementation.

4. pink eye fly x pink eye fly --> purple eye flies: This cross indicates that the mutants are in the same complementation group, as the offspring show a novel phenotype (purple eyes) that is not observed in the parental flies. This suggests that the mutations in the two flies are in different alleles of the same gene and are capable of complementing each other to produce a wild-type phenotype.

5. pink eye fly x pink eye fly --> pink eye fly: This cross suggests that the mutants are in the same complementation group, as the offspring show the same phenotype as the parents (pink eyes), indicating that the mutations are in the same gene and do not complement each other.

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Answer: In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose. hope it helps <3

Plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose in the dark reaction.

Dark reaction also called carbon-fixing reaction which is a light-independent process in which sugar molecules are formed from carbon dioxide and water molecules. This occurs in the stroma of the chloroplast, where they use up the products of the light reaction.

Dark reaction is a light-independent process in which sugar molecules are formed from carbon dioxide and water molecules. This reaction occurs in the stroma where it utilizes the products of the light reaction. Since this is not directly dependent on light, it is called as the dark reaction.

The reactants in the dark reaction are NADPH, ATP and Carbon dioxide.​

Thus, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose in the dark reaction.

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Answer:

Reproduction: ensures the continuity of various species on the Earth

Homeostasis: maintains optimal conditions for enzyme action throughout the body, as well as all cell functions

Growth: Growth is a way to generate the materials for reproduction.

Respiration: It releases energy from the food

Excretion:to prevent accumulation of harmful substances in the body.

Nutrition: help break down food to give organisms energy

Explanation:

hope this helps

Answer:

If its T/F it's True

Explanation:

Examine five words and/or phrases and determine the relationship between most of the words/words. Here the upwelling does not fit the pattern. Here option E is the correct answer.

The majority of the words/phrases are related to the factors that can affect the rate of photosynthesis in plants. Photosynthesis is the process by which plants convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.

Lower rates of photosynthesis indicate a decrease in the amount of light energy that is converted into chemical energy. This can be caused by various factors, including insufficient light, water, or nutrients. Increased phosphorus concentration, high light levels, and increased nitrogen concentration, on the other hand, are all factors that can increase the rate of photosynthesis by providing the necessary nutrients and energy for the process.

Upwelling, however, does not fit this pattern as it is not a direct factor that affects photosynthesis in terrestrial plants. Upwelling refers to the movement of cold, nutrient-rich water from the bottom of the ocean to the surface, which can provide nutrients for marine plants. However, terrestrial plants do not directly benefit from this process as they do not have access to nutrient-rich water.

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Complete question:

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. choose the one option that does not fit the pattern. group of answer choices

A - lower rates of photosynthesis

B - increased phosphorus concentration

C - high light levels

D - increased nitrogen concentration

E - upwelling

Velocity is the variable which is changing during motion of skater.

Velocity is the variable which is changing when the skater moves up and down the track because moving upward on the slope decrease the speed of the skater while on the other hand, velocity increases when moving downward on the slope.

Mass of the body which is skating remain constant or can't change with height. Mass is the amount of matter present inside the body so we can conclude that velocity is the variable which is changing during motion of skater.

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Answer:

The cause of the 90 decreases in southern California steelhead run sizes are because of the dams along the water sources and it has cause 90% decrease in the southern California steelhead run sizes. The Dam alter aquatic ecology cause the river hydrology up steam and down steam which cause the affecting water quality.

The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.

The dam is a large structure that serves the purpose of holding back water and making its level to rise quite high. Dams could be used for the purpose of electricity generation.

The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.

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Answer:

The answer is B: The projections increase the surface area-to-volume ratio of the cell, which allows for more efficient nutrient exchange with the environment.

Explanation:

These finger-like projections, also known as microvilli, are commonly found in cells that are actively involved in absorption or secretion, such as the kidney cells in this scenario. They significantly increase the surface area of the cell, thereby allowing more transport proteins to be embedded in the cell membrane and facilitating more efficient exchange of molecules between the cell and its environment. This increase in surface area doesn't significantly affect the volume of the cell, so it doesn't considerably increase the metabolic needs of the cell.

Therefore, these projections do not primarily increase the volume of the cell (option A), the speed of individual molecule movement (option C), or the selectivity of the membrane by limiting the number of transport proteins (option D). Instead, they enhance the cell's capacity for molecular exchange by increasing its surface area.

Answer:

During this process the messenger RNA and the transfer RNA are manufactured

Explanation:

These RNAs are necessary to be able to comply with the formation of proteins, since they read the genetic code and after this they assemble the reading to make proteins of structure, function and support.

This is how cells when dividing or multiplying separate their genetic code by replicating.

The population, to the nearest whole number, of bacteria after 15 days is approximately 4,769 bacteria, The correct option is E, None of the above.

To find the population of bacteria after 15 days, we can use the formula for exponential growth:

N = N₀ * \((1 + r)^t\)

Where: N = Final population after time t N₀ = Initial population r = Growth rate per time period t = Time period

Given: N₀ = 500 bacteria r = 50% per day (or 0.5) t = 15 days

Plugging in the values, we have:

N = 500 * \((1 + 0.5)^{15\)

Calculating this expression:

N = 500 * \((1.5)^{15\) N

= 500 * 9.537 N

= 4,768.5

Thus, the correct option is E, None of the above.

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The question is inappropriate; the correct question is:

The initial population of a bacterial colony is observed to be 500 bacteria. The population shows a growth rate of 50% per day, and the carrying capacity of the surrounding area is estimated to be 2,000,000 bacteria. To the nearest whole number, find the population of bacteria after 15 days.

A.  165,822 bacteria

B.  622,707 bacteria

C.  903,430 bacteria

D.  2,000,000 bacteria

E.  None of the above

Answer:

They can be found in the plant cell.

Explanation:

Most plants cells have a single vacuole. If they have more than one, only one vacuole is found large,l and it is called the central vacuole.

The team that would  observe the greater variety of living things in the waters they visit is the second team.

We have to note that the aquatic ecosystem has a great degree of biodiversity. This implies that there are several kinds of organisms that can be found in the ecosystem that exists in the water that is under study.

Recall that just like every other ecosystem, the ecosystem that you can find in the water is completely a self supporting ecosystem. There a re producers, consumers and decomposers as in every other ecosystem that we have.

The biodiversity in the ocean increases as we move down towards the bottom of the ocean as most of the organisms tend to live in the benthic zone which is the zone that is very cold and about 1000 meters below the surface.

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Answer:

It is a vortex of air , approximately 2 to 10 mile in diameter , within a convective storm. In a mesocyclone, air rises and rotates around a vertical axis, usually in the same direction as low pressure systems. They are most often associated with a localised low-pressure region within a severe thunderstorm. It is considered to be one of the strong thunderstorms. The mesocyclone is found within the convective storm in the form of a vortex of air. The air rises and rotates along the vertical axis.

Mass wasting is caused by gravitational force.

The motion of soil and rock down the slope under the action of gravity is called mass wasting.

The most common examples of mass wasting are the downward flow of debris from a mountain, slubs, and rock falls.

Usually, these events occur as a result of an earthquake or seismic activity.

However, such events are initiated by frequent rainfall, volcanic activity, shaking, land sliding, weak slope surfaces, and storm waves. etc. Excessive precipitation is also one of the primary reasons behind the mass wasting process.

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Answer:

frost wedging

Explanation:

Answer:

Frost Wedging

Explanation:

Bcoz Expect Frost Wedging all of remaining are chemical weathering process...

Most macromolecules are made from single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.

Answer: During melosis variation in inherited traits each parent chromosome pair along their lengths. The chromosomes cross over at points called chiasma.

The total number of alleles present in a population of 500 individual diploid plants the correct answer is e. 1,000.

In a population of 500 individual diploid plants, each plant will have two copies (or alleles) of the gene that governs flower color.

Therefore, the total number of alleles in the population can be calculated as:

Total alleles = number of individuals x number of alleles per individual

Total alleles present in a population = 500 x 2

Total alleles present in a population = 1,000

Therefore, the correct answer of The total number of alleles present in a population of 500 individual diploid plants  is e. 1,000.

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Answer:

Meiosis I

Explanation:

The separation of homologues occurs during meiosis I. The Option A.

During meiosis I, the process of cell division specifically designed for the formation of gametes, the separation of homologous chromosomes occurs. Meiosis I consists of several phases including prophase I, metaphase I, anaphase I, and telophase I.

In prophase I, homologous chromosomes pair up and exchange genetic material through a process called crossing over. During metaphase I, the pairs of homologous chromosomes align at the center of the cell. Then, in anaphase I, the homologous chromosomes separate and move toward opposite poles of the cell.

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According to the information provided by the question we have:

The structure labeled W represents the double stranded DNA that is found in the Nucleus of the animal cell. The arow labeled X represents the process of Transcription where DNA is decoded into a single strand of mRNA in the Nucleus.

The arrow labeled Y represents the process of Translation where the tRNA molecules bring which occurs in the Cytoplasm of the cell. The structure labeled Z represent Amino acids that are being brought to the ribosome by tRNA molecules and will ultimately make up the protein. This entire process is referred to as Protein Syntheis.

The molecules that are labeled as W, X, Y and Z are, respectively: the DNA molecule, transcription, translation and amino acids.

Organisms that help return nitrogen back to the soil and convert it into ammonium are called nitrogen-fixing bacteria. These bacteria have the ability to convert atmospheric nitrogen gas (N2) into a form that plants can use, such as ammonium (NH4+).

Here's how the process works:
1. Nitrogen-fixing bacteria live in the soil, usually in a symbiotic relationship with certain plants, such as legumes (peas, beans, etc.).
2. These bacteria have an enzyme called nitrogenase, which enables them to convert nitrogen gas (N2) from the air into ammonium (NH4+).
3. The plants provide a suitable environment for the bacteria to thrive by providing them with sugars and other nutrients.
4. In return, the bacteria supply the plants with ammonium, which can be used by the plants to synthesize proteins and other essential nitrogen-containing molecules.
5. When the plants die or shed their leaves, the ammonium is released back into the soil, enriching it with nitrogen.
6. Other organisms, such as decomposers, further break down the organic matter and release the ammonium for use by other plants.
In conclusion, nitrogen-fixing bacteria play a crucial role in returning nitrogen back to the soil and converting it into ammonium, which is essential for the growth and development of plants.

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According to Price's social competitiveness hypothesis, depression is a subconscious, reflexive losing tactic that permits people to concede loss in competitive situations.

The depressive mood is thought to have evolved in response to social rivalry as an unconscious, automatic losing tactic, allowing the person to accept defeat in ritual agonistic conflicts and to accommodate to what would otherwise be intolerably low social rank.

The buffering hypothesis and the direct effects hypothesis are the two main explanations for the relationship between social support and health.

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Answer:

Cavity

Explanation:

The proper name is the plerual cavity. This space is filled with fluids that allows movement against the ribs.

answer is c solar energy

Answer:

solar energy

Explanation: