Question: Answer the following question given this paragraph: Q: What force provides resistance whenever two surfaces are in contact? Choices: - vibration - tension - rotation - friction A:
Answer: friction

Question: Answer the following question given this paragraph: The gonads secrete sex hormones. The male gonads are called testes . They secrete the male sex hormone testosterone. The female gonads are called ovaries . They secrete the female sex hormone estrogen. Sex hormones are involved in the changes of puberty. They also control the production of gametes by the gonads. Q: The testes produce what hormone? Choices: - dopamine - insulin - estrogen - testosterone A:
Answer: testosterone

Question: Answer the following question given this paragraph: Recall that terrestrial biomes are defined by their climate. That's because plants and animals are adapted for certain amounts of temperature and moisture. However, would aquatic biomes be classified in the same way? No, that wouldn't make much senseall parts of an aquatic environment have plenty of water. Aquatic biomes can be generally classified based on the amount of salt in the water. Freshwater biomes have less than 1% salt and are typical of ponds and lakes, streams and rivers, and wetlands. Marine biomes have more salt and are characteristic of the oceans, coral reefs, and estuaries. Q: How are aquatic biomes often classified? Choices: - depth - amount of life - amount of light - amount of salt A:
Answer:
amount of salt