1.Having spent much time in sunlight during youth, an older person develops skin cancer and has the growths removed. What environmental mutagen causes the growths to keep coming back AND why might the growths keep coming back?2.Is a mutation that happens during meiosis likely to affect a single gene or an entire chromosome? Explain.

Answers

Answer 1
Answer:

1. remaining skin cells still have the mutation that causes the cancer in their DNA, even if the symptoms are removed

2. it is likely to affect an entire chromosome because during meiosis there may be errors in crossing over when the condensed chromosomes can exchange large parts of the chromosomes in error


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Someone help please!!!

Answers

Answer:

Building desalination plants and using rain gauges.

Explanation:

Using the process of elimination, seismographs are incorrect because they measure earthquakes and obviously earthquakes have nothing to do with droughts (ok, maybe a little bit). Snowplows are used to plow snow, so the remaining answers should be correct.

What human activities threaten biodiversity

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Any type of habitat destruction threatens biodiversity. Logging, construction, farming, building riads, these are but a few examples.

When you exhale which way does the rib cage move

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your ribcage moves downward

what do you call the phenomenon When you have a different concentration of materials on the inside and outside of the cell

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Answer: Osmosis

Explanation:

Osmosis can be defined as the phenomenon in which there is a difference in the concentration of materials on the different sides of the cell.

The concentration inside the cell is different and the concentration outside is different.

The membrane in between is the semipermeable membrane which allows the movement of certain molecules.

The movement of solvent takes place from a region of their higher concentration to the area of lower concentration via semipermeable membrane.

Answer: Osmosis

Definition: A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.

what are two ways that the size of a population can increase ? what are two ways that the size of a population can decrease

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Answer:

For population increase two factors or ways are described which are birth or death, immigration and emigration.

The two ways a population can decrease is through mortality and emigration.

Explanation:

A population's increase is resolved  by  death, birth, immigration, and emigration. When a population's birthrate is higher than its death rate the population size, The population size is rises.

Also,The two factors responsible for the decrease in size of a population are emigration, which is the migration of an individual from a place. and mortality, which is the number of individual deaths in a population over a period of time.

Import of people, animals, or plants. Birth of new babies, animals, or plants.

Export. Death. 

Behavioral adaptationI need a animal with a special behavior. Than I need to know how does its behavior help the animal.

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the behavior helps the animal because its what helps them to survive , mate , and even help reduce societal problems

an animal with a special behavior could be a bear... its behavior being hibarnation, which helps the bear sleep during the winter