People who drink coffee, become more focused.
what would be the independent variable and dependent variable?
list at least 2 possible standard variable

Explain why the plants cortex would serve as the best food source for animals

Which describes the habitat of a frog?

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