Ust FOUR examples of how germs can be transferred from one object or
person to another,

Germs can be spread many ways, including three types of transmission (or passing of germs):

Direct,

Indirect

Airborne.

Direct transmission means person-to-person contact occurs, and the germs are passed that way. Indirect means that someone spread germs onto an object and when the next person touched that object, the germs spread.

Explanation:

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

the correct answer is:

a population changes in response to a change in the environment.