Guppies are small, tropical freshwater fish that display wide variation in coloration. some have bright splotches of blue, red, and orange, while others are quite drab and dull. research has shown that females prefer to mate with brightly colored males; however, this trait makes them more likely to be seen. guppies, like all species, must be able to both survive and reproduce in order to avoid extinction what is one factor that can affect what color trait is selected for a particular environment?

Which of the following is not a defining characteristic of plants?

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed