What would happen if prey were removed from the food web?

The population of predators would decrease.

The population of predators must stay the same.

The population of predators would fluctuate.

The population of predators could increase.

A) The population of predators would decrease.

Explanation:

you would be taking away their food, making them begin to die off.

i would say it is

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