Question: Choose your answer.

Which of these is the most common result of greenhouse gases altering the atmosphere of Earth?

OPTIONS:
- an increase in the air temperature
- a decrease in the air density
- an increase in the intensity of visible light
- a decrease in the thickness of the ozone layer
My Answer: an increase in the air temperature

Question: Choose your answer.

Dust and ash entering the atmosphere as a result of volcanic eruptions can affect Earth's

OPTIONS:
- tidal activity
- orbital shape
- weather and climate
- rotation and revolution
My Answer: weather and climate

Question: Choose your answer.

For two organisms to be classified as the same species, they must produce offspring that are

OPTIONS:
- fertile.
- adaptable.
- alive at birth.
- identical to the parents.
My Answer: fertile.

Question: Choose your answer.

Moving water in a river is considered a renewable resource because it

OPTIONS:
- carries dissolved oxygen
- easily erodes sediments
- is made of natural gas
- can be recycled by nature over time
My Answer:
can be recycled by nature over time