Q: Living things get energy from food in a process called respiration, which releases what gas back into the atmosphere? Choices: - oxygen - hydrogen - nitrogen - carbon dioxide A:
carbon dioxide

Q: Increasing what property of dirt would make it easier to rinse off your hands? Choices: - turbidity - density - viscosity - solubility A:
solubility

Q: Q: What is it called when one or more ending digits are dropped to get the correct number of significant figures? Choices: - basing - turning - scientific notation - rounding A:
A: rounding

Question: Q: As roots grow longer they will always do what? Choices: - change direction - get larger - get thicker - grow downward A:
Answer: grow downward

*Question*
Q: Earth rotates on its axis once each day and revolves around the sun how often? Choices: - once each month - ever 3 years - every other year - once each year A:
**Answer**
once each year

Q: Q: How many dimensions can humans see in? Choices: - five - two - one - three A:
A: three