Q: What are elements required in very small amounts? Choices: - pollutants - minerals - macronutrients - micronutrients A:
micronutrients

(Question)
Q: Light-weight air-filled bones and a large four-chambered heart helps a bird do what? Choices: - swim - digest - run - fly A:
(Answer)
fly

Ques: Q: What is the force of gravity called? Choices: - scale - mass - pressure - weight A:
Ans: weight

(Q).
Q: What organ interprets what our sensory organs sense? Choices: - nerves - lungs - thyroid - brain A:
(A).
brain

Ques:Q: Air quality is a measure of what in the air? Choices: - nitrogen - precipitation - oxygen - pollutants A:

Ans:pollutants

Q: During what stage are chromosomes condensed enough to be seen under a microscope? Choices: - cytokinesis - meiosis - epistasis - mitosis A:
mitosis