1. is an environmental group that works to create awareness of pollution.

a. the ira
b. greenpeace
c. congress
d. the fda

2. governments don't always enforce the environmental laws because:

a. they don't believe in them
b. they are too busy
c. they don't have enough money to enforce all the laws
d. they expect the public to enforce laws

3. which law was created to protect certain animals from being extinct.

a. endangered species act
b. the national defense council
c. greenpeace
d. earth day

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.