Does anyone know what this is A B C D?

The answer is A(Toxic)

Explanation:

Because if you cut down all the trees in the area, then it would release toxicity into the atmosphere

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

bc blah

explanation:

bc blah