Q: Waste leaves the body in the form of what? Choices: - saliva - stomach acid - impurities - feces A:
feces

(Question)
Q: Shivering and adipose tissue called brown fat are used by mammals in particular to produce what? Choices: - energy - blood - nutrition - heat A:
(Answer)
heat

Ques: Q: What do you call a unique substance formed when two or more elements combine chemically? Choices: - component - mixture - solution - compound A:
Ans: compound

(Q).
Q: Secondary pollutants form from chemical reactions that occur when pollution is exposed to what? Choices: - humans - water - air - sunlight A:
(A).
sunlight

Ques:Q: What do we call scientists who study and forecast the weather? Choices: - Climate predictors - TV hosts - forecasters - meteorologists A:

Ans:meteorologists

Ques: Q: Hydrogen gas is generated by the reaction of nitric acid and what else? Choices: - gaseous iron - martian iron - carbon - elemental iron A:
Ans:
elemental iron