Q: Water at 20C in an uncovered pan is evaporating very slowly. What could be done to the water to make it evaporate more quickly? OPTIONS:
- Cover it.
- Heat it.
- Place it in the dark.
- Put salt in it.
A: Heat it.

What happens to water molecules during the boiling process?
OPTIONS:
- They move faster and move farther apart as they absorb heat.
- They move faster and remain close together as they absorb heat.
- They move more slowly but move farther apart as they lose heat.
- They move faster and move farther apart as they lose heat.

They move faster and move farther apart as they absorb heat.

Q: Which statement best compares single-celled and multi-celled organisms? ---- OPTIONS:
- Tissues in a single-celled organism are like the cells in a multi-celled organism.
- The nucleus in a single-celled organism is like the skin of a multi-celled organism.
- Organelles in a single-celled organism are like the organs in a multi-celled organism.
- The cytoplasm in a single-celled organism is like the nervous system in a multi-celled organism.

A: Organelles in a single-celled organism are like the organs in a multi-celled organism.

City administrators can encourage energy conservation by
===
OPTIONS:
- lowering parking fees
- building larger parking lots
- decreasing the cost of gasoline
- lowering the cost of bus and subway fares

lowering the cost of bus and subway fares

Question:
Lori owns a house next to the lake. She uses lots of fertilizer to keep her lawn green. Which impact could fertilizing her lawn have on the lake?
OPTIONS:
- an increase in the algae population
- an increase in the fish population
- an increase in the mosquito population
- an increase in the lake's depth
Answer:
an increase in the algae population

[Q]: How do scientists know that some mountains were once at the bottom of an ocean?
===
OPTIONS:
- Freshwater rivers flow to the ocean.
- Saltwater fish are found in some mountain streams.
- Dinosaur bones have been discovered in the mountains.
- Marine fossils have been found on the peaks of some mountains.
****
[A]:
Marine fossils have been found on the peaks of some mountains.