Which is a weakness of traditional food webs when they are applied to complex ecological problems?

a) a food web does not represent all the links in an actual ecosystem.
b) food webs do not account for non-native species in the environment.
c) the many food chains of a food web make it too complicated to use.
d) trophic levels are not taken into account when creating a food web.

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.