(Question)
Q: What mineral that occurs in bones helps combat osteoporosis? Choices: - magnesium - iron - potassium - calcium A:
(Answer)
calcium

(Question)
Q: Invertebrates make up what percentage of all animal species? Choices: - 90 percent - 50 percent - 30 percent - 95 percent A:
(Answer)
95 percent

(Question)
Q: What occurs when water on the surface changes to water vapor? Choices: - oxidation - photosynthesis - condensation - evaporation A:
(Answer)
evaporation