Circle the letter of each substance that dissolves in water.
a. salt b. oil c. oxygen d. wax

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

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

Select the star life cycle that is accurate