A few blackcap warblers live year-round in southern France, although 75 percent of the population migrates from this area in winter. Hypothesis: Perhaps the difference between the two behavioral phenotypes is environmentally induced and not hereditary. The two phenotypes are migratory behavior or no migratory behavior. Make a prediction related to this hypothesis, and if this prediction is true the hypothesis would be fairly accurate. How would a researcher test this prediction

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Explain why phospholipid molecules form a bilayer. (3 marks)