Which adaptation is likely to increase the chances of survival of an organism in an arctic environment? White coat, as it protects from predators
Brown coat, as it protects from temperature
Thick coat, as it protects from predators
Thin coat, as it protects from temperature

and please explain for brainliest.

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.