Q: What does the heat energy affect in the atmosphere? Choices: - gravity and precipitation - erosion and condensation - density and humidity - winds and weather A:
winds and weather

Q: What is the smallest class of elements? Choices: - halogens - noble gases - synthetics - metalloids A:
metalloids

Q: Q: What do we call the seasonal movement of animals? Choices: - population - trade - immigration - migration A:
A: migration

Question: Q: In vertebrates, cholesterol is synthesized in which organ and obtained from the diet? Choices: - the bone - the brain - heart - the liver A:
Answer: the liver

*Question*
Q: Pieces of the cell break off and form a new cell in what type of reproduction that produces genetically identical organisms? Choices: - Meiosis - Mitosis - Fusion - fragmentation A:
**Answer**
fragmentation

(Q).
Q: The way in which the sun produces light is called what? Choices: - tumescence - rays - photosynthesis - incandescence A:
(A).
incandescence