Certain insects resemble the twigs of trees on which they live. The probable reason for this resemblance is that a)the trees caused a mutation to occur
B)no mutations have taken place
C)natural selection has favored this trait
D)the insects needed to camouflage themselves

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

What causes temperature extremes in the desert