Q: Answer the following question given this paragraph: Alveoli are tiny sacs in the lungs where gas exchange takes place. Q: What are the tiny sacs in the lungs where gas exchange takes place? Choices: - bronchi - ganglion - cilia - alveoli A:
A: alveoli

Q: Answer the following question given this paragraph: Mutation creates new genetic variation in a gene pool. Q: Mutation creates new genetic variation in what? Choices: - mutation pool - disease pool - form pool - gene pool A:
A: gene pool

Q: Answer the following question given this paragraph: Q: Gene duplications that are able to persist over many generations without causing too much harm to an organism or species can lead to what? Choices: - characteristics - parasites - permutations - mutations A:
A: mutations

Q: Answer the following question given this paragraph: Water droplets form when the air reaches 100% humidity. If the temperature is cold enough, frost will form. Q: Water droplets form when the air reaches 100-percent what? Choices: - density - chance of rain - heat - humidity A:
A: humidity