1. What is the only effective way to protect groundwater? a. Prevent contamination.
b. Use advanced sewage treatment.
c. Cover all wells carefully.
d. Treat water from underground sources.

Describe speciation of the galapagos island finches in terms of geographic isolation

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Is genetic diversity the same as genetic variation?