Tobject]user: how do the ovaries the female's body prepare for a possible pregnancy?
a. they add a lining rich in nutrients to the uterus.
b. they enlarge to hold the developing baby.
c. they secrete hormones that control the ovarian cycle.
d. they secrete alkaline fluids to aid in sperm survival.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

genetic variation will increase because of a new habitat and food source.

explanation: