Q: What is a thin layer of gas that surrounds earth called? Choices: - the cloud cover - the dioxide - the wind cycle - the atmosphere A:
the atmosphere

Q: What branch of biology focuses on heredity? Choices: - Epidemiology - ontology - semiotics - genetics A:
genetics

Q: Q: Near-earth asteroids cross paths with earth, meaning they could collide; what are the paths called? Choices: - trajectory - curves - galaxies - orbits A:
A: orbits

Question: Q: The reaction of an alkyl halide with an inorganic hydroxide base at elevated temperature produces what? Choices: - blood - methane - yeast - an alcohol A:
Answer: an alcohol

*Question*
Q: What basic structures of the nervous system innervate the muscles of the respiratory system and are responsible for controlling and regulating pulmonary ventilation? Choices: - toxins - enzymes - ions - neurons A:
**Answer**
neurons

(Q).
Q: Frogs and toads have long back legs which are specialized for what action? Choices: - flying - swimming - sprinting - jumping A:
(A).
jumping