Which type of biomolecule is used as a catalyst in chemical reactions to lower activation energy

Nucleic Acids

Explanation:

Nucleic Acids, cont. Enzymes are biological catalysts that speed up chemical reactions (to change one set of chemicals to another) by lowering their activation energy.

C) It involves interactions between biotic and

abiotic factors.

Explanation:

Ecosystems need energy imput, need both consumers and producers, and can exist on land, lakes, rivers and oceans.