Fitness would refer to the relative ability of an organism to survive and produce fertile offspring. It is a <span>measure of an organism's ability to survive and produce offspring relative to other members of a population. Hope this answers the question.</span>
Psychologists use statistics to assist them in analyzing data, and also to give more precise measurements to describe whether something is statistically significant. Analyzing data using statistics enables researchers to find patterns, make claims, and share their results with others.
3 - Exposure to radiation
Radiation ionises cells and can cause mutations in genes.
The rest of the options have no affect on genetics at all, merely a temporary affect on the physical aspects of the body, such as heart rate etc.
I think that they look towards the rain forests because there is always new or similar species with in the forests. They might need to see if they can find more to the species and see if they are going extinct. They would do anything to help the plants and animals survive and populate.