What is the howler monkeys biome

rainforests

Howler monkeys are found only in the rainforests of the Americas. They live in tall rainforest trees in groups of between 4 and 19 members. They travel from tree to tree in search of food—walking from limb to limb, rather than jumping.

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 answer is b.) hydrogen bonds between bases.