Ques:Q: What is formed when nitrogen and sulfur oxides dissolve in rain? Choices: - toxic rain - ozone - hail - acid rain A:

Ans:acid rain
-----
Ques:Q: If everything in a system stays the same but the pressure deceases, gas bubbles will change in what way? Choices: - they multiply - they pop - they get smaller - they get bigger A:

Ans:they get bigger
-----
Ques:Q: Fossil fuels are made out of what two objects? Choices: - gases and animals - plants and water - soil and animals - plants and animals A:

Ans:plants and animals
-----
Ques:Q: What occurs in a formerly inhabited area that was disturbed? Choices: - spontaneous mutation - mass extinction - natural selection - secondary succession A:

Ans:
secondary succession
-----