Q: Q: What is the main function of the cardiovascular system? A: | OPTIONS:
- respiration of air
- excretion of food waste
- coordinate bones and muscles
- transporting substances around the body
A: transporting substances around the body

Q: Q: Latitude, humidity, and elevation affect the type of what, a term for a large naturally occurring community? A: | OPTIONS:
- territory
- ecosystem
- climate
- biome
A: biome

Q: Q: What is venus covered in a thick layer of? A: | OPTIONS:
- storms
- fog
- gases
- clouds
A: clouds

Q: Q: A statement that describes what always happens under certain conditions in nature is also known as what? A: | OPTIONS:
- theory
- hypothesis
- scientific motion
- scientific law
A: scientific law