Which of the following is true about competition among organisms? O Organisms can only compete for food and water.
O Organisms compete when sufficient resources are not available.
O Only organisms of different species can compete.
O Plants are not capable of competing for resources.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

i think the answer would d

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