Ques: Q: What does a theory need to be supported by? Choices: - facts - peer reviewed journals - scientists - many observations A:
Ans: many observations

Ques: Q: In many species, display behaviors, like a gorilla beating on its chest, are used instead of actual physical attacks to show what? Choices: - dominance - friction - stress - aggression A:
Ans: aggression

Ques: Q: What happens when heated water is released into a body of water? Choices: - crystalline pollution - gaseous pollution - geysers - thermal pollution A:
Ans: thermal pollution

Ques: Q: What gas comprises about three-fourths of earth's atmosphere? Choices: - hydrogen - carbon dioxide - oxygen - nitrogen A:
Ans:
nitrogen