In an ecosystem, are producers because they make their own food. A. plants B. herbivores C. omnivores D. animals

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet

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

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.