A source of healthy, locally grown food for the population of a given area : ( you have to type an answer it doesn't give me any choices. )

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

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

condenser is used to focus in the light microscope.

this would be called the responsiveness