*Question*
Q: What does ozone in the stratosphere protect us from? Choices: - comets - acid rain - solar traces - solar rays A:
**Answer**
solar rays

*Question*
Q: In the humid subtropical climate, summers are ____ but winters are very cold. Choices: - long - dry - windy - wet A:
**Answer**
wet

*Question*
Q: What umbrella term describes small structures that exist within cells and perform specialized functions? Choices: - macromolecules - atoms - organisms - organelles A:
**Answer**
organelles

*Question*
Q: What kind of competition often leads to extinction because the species that is less well adapted gets fewer of the resources that both species need? Choices: - intraspecific competition - parasitism - mutualism - interspecific competition A:
**Answer**
interspecific competition