Ques: Q: How many sets of chromosomes does each somatic cell have? Choices: - one - four - six - two A:
Ans: two

Ques: Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Choices: - density - volume - altitude - temperature A:
Ans: temperature

Ques: Q: What do you call a period when temperatures are cooler than normal, causing glaciers to spread? Choices: - polar age - earth age - thermal age - ice age A:
Ans: ice age

Ques: Q: Most scientists think that ordinary matter is less than half of the total matter in the universe; the remaining part includes what mysterious entity? Choices: - mystery matter - magic matter - cold matter - dark matter A:
Ans:
dark matter