Usually means rainy weather because moist air is rising. a. rising air pressure b. rising temperature c. decreasing temperature d. decreasing air pressure

Decreasing air pressure

just took the test!

i think its the first one

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