Q: What are the three main types of rocks? Choices: - limestone , igneous and metamorphic - plutonic, igneous and metmorphic - crystalline , igneous and metamorphic - sedimentary, igneous and metamorphic A:
sedimentary, igneous and metamorphic

(Question)
Q: What is the acid that is released by the stomach that kills most pathogens that enter the stomach? Choices: - Nitric Acid - Hydrofluoric Acid - Sulfuric Acid - hydrochloric acid A:
(Answer)
hydrochloric acid

Ques: Q: Pyramids of net production and biomass reflect what level of efficiency? Choices: - high - medium - extreme - low A:
Ans: low

(Q).
Q: What type of lens and mirrors have a negative focal length? Choices: - converging - convexing - subverging - diverging A:
(A).
diverging

Ques:Q: A catalyst decreases the amount of what resource that is required in order to begin a chemical reaction? Choices: - positive energy - motion energy - kinetic energy - activation energy A:

Ans:activation energy

Q: What is the exchange of energy from one part of the universe to another called? Choices: - cold - temperature - humidity - heat A:
heat