Mark’s discovery has Emily concerned. She has blue eyes, while both of her parents have brown eyes. Is it possible for Emily to be their biological daughter?

Astudent is working on an experiment to study the cooling curve of water. during the experiment, a beaker containing hot water falls to the floor and is shattered. the student’s immediate response should be to

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.

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?