Which process is defined as breaking down rocks into smaller pieces without changing the rocks compositing?

It is weathering Not erosion, my teacher told me that this was the answer

The body is protected against harmful flu viruses by

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples

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