How does a gene mutation happen?

Which anatomical plane is the only one that could not show both the sternal region and vertebral region

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow

Why are some places regularly warmer or cooler than others in a given month