Q: When does a caldera form? Choices: - after a hurricane - when faults form - before an eruption - after an eruption A:
after an eruption

(Question)
Q: What is the only class of animals that has hair? Choices: - reptiles - amphibians - birds - mammals A:
(Answer)
mammals

Ques: Q: Which side of the heart does blood from the lungs enter into? Choices: - right ventricle - left ventricle - right atrium - left atrium A:
Ans: left atrium

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

Ques:Q: What is the outer core made of? Choices: - compressed air - solid rock - solid iron - liquid metal A:

Ans:liquid metal

Question: Q: In the equation for pressure, how is force expressed? Choices: - meters - pounds - teraflops - newtons A:
Answer:
newtons