Answer the following question given this paragraph: Q: What is a primary source of the hormone melatonin? Choices: - thymus - pituitary gland - thyroid gland - pineal gland A:
pineal gland
(Question)
Answer the following question given this paragraph: An atomic orbital is a region of space around an atom that has a non-zero probability for an electron with a particular energy. Analogously, a molecular orbital is a region of space in a molecule that has a non-zero probability for an electron with a particular energy. Both an atomic orbital and a molecular orbital can contain two electrons. Q: What term describes a region of space around an atom that has a non-zero probability for an electron with a particular energy? Choices: - orbital lobe - minimal orbital - related orbital - atomic orbital A:
(Answer)
atomic orbital
Ques: Answer the following question given this paragraph: rates The rates at which reactants are consumed and products are formed during chemical reactions vary greatly. We can identify five factors that affect the rates of chemical reactions: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst. Q: The presence of what, which acts as a trigger, affects the rate of chemical reaction? Choices: - friction - heat - light - catalyst A:
Ans: catalyst
(Q).
Answer the following question given this paragraph: Average acceleration is the rate of change of velocity, or the change in velocity per unit time. Q: Average acceleration is the rate of change of what? Choices: - direction - speed - displacement - velocity A:
(A).
velocity
Ques:Answer the following question given this paragraph: Geothermal energy is clean and does not release greenhouse gases. Q: What type of energy is clean and does not release greenhouse gases? Choices: - natural gas - coal - lithosphere energy - geothermal energy A:

Ans:geothermal energy
Answer the following question given this paragraph: The volume increases as the temperature increases. The result has three significant figures. Q: What happens to volume as the temperature increases? Choices: - volume fluctuates - volume decreases - volume is unchanged - volume increases A:
volume increases