Biological diversity of an ecosystem, which is determined by the variety of species of plants and animals is called Group of answer choices evolution abiotic factor Biodiversity Ecosystem

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

condenser is used to focus in the light microscope.

answer: b

coz red blood cells marrow and circulates the body for 120 days.