5which of the following statements best explains
why geographic isolation can lead to speciation?

a physical separation of populations reduces
competition for each group.

b physical separation of populations prevents
interbreeding and mixing of gene pools.

c physical separation of populations provides
more space for each group's size to increase.

d physical separation of populations stresses
the organisms and causes mutations in their
genetic code.

What did the first language sound like

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

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.