Q: The distance that light can travel in a year is known as what? Choices: - earth year - beam year - solar year - light year A:
light year

Q: What can be thought of as the fundamental unit of life? Choices: - ion - atom - electron - cell A:
cell

Q: Q: Spindle fibers form between the centrioles during prophase i of what process? Choices: - mitosis - hydrolysis - photosynthesis - meiosis A:
A: meiosis

Question: Q: Which system of the body is responsible for bringing air into the body? Choices: - vascular system - excretory system - digestive system - respiratory system A:
Answer: respiratory system

*Question*
Q: What kind of core does mercury have? Choices: - solid metal - gas - dense metal - liquid metal A:
**Answer**
liquid metal

(Question)
Q: What is the tissue beneath a mollusks' shell called? Choices: - cartilage - skin - mucous - mantle A:
(Answer)
mantle