weathering is caused by plant acids, oxygen, and carbon dioxide.

Mark only one oval.

⬭ Chemical
⬭ Physical
⬭ Mechanical
⬭ Burpsical

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

rain is the best answer