Help please All life stems from a common ancestor. Which evidence best supports this statement?
OA anatomical structures
OB. fossilized algae and plants
OC. DNA from living organisms
OD presence of bone fragments in rock layers

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.