Plz

think about it: since hard-shelled organisms evolved about 550 million years ago, billions of tons of limestone rock have been produced from their shells. limestone is made of calcium carbonate, with the formula caco3.

based on this, how do you think the amount of atmospheric co2 has changed in the last 550 million years, and how has this affected earth’s climate? explain your answer.

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

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high