It is believed the major reason for the decline in amphibian species is
a. death through disease
b. changing reproductive habits
c. mutation
d. climate change

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

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.

In the united states there are many types of rabbits. four different species have four different ranges or habitats. in which range would developing white fur in winter most likely not be an advantage?