Genetic variation<span> occurs </span>mainly<span> through DNA mutation, gene flow (movement of genes from one population to another) and sexual reproduction</span>
G1. (G stands for gap.)
The cells makes needed proteins for the process.
B) It's known as a Fault. That's why they say "Don't drill on a fault line," because when fault lines move they cause earthquakes, and other occurrences.
hope it helps you
a. not be able to meet long term timber needs.
