Question: Answer the following question given this paragraph: Early researchers in radioactivity found that the emissions from radioactivity could be classified into three distinct types according to their penetrating power. One type of radiation could barely penetrate a sheet of paper. The second type could pass through as much as 3 mm of aluminum. The third type was extremely penetrating and could pass through several centimeters of lead. They named these three types of radiation alpha , beta , and gamma respectively. Eventually, each type of radiation was further identified. Alpha particles are the nuclei of helium atoms, . Beta particles are electrons, and gamma rays are very high energy photons (even higher energy than x-rays). Q: Alpha, beta and gamma are three types of what? Choices: - directions - mutation - convection - radiation A:
Answer: radiation

Question: Answer the following question given this paragraph: In normal faults , the hanging wall drops down relative to the footwall. Normal faults are caused by tension that pulls the crust apart. This causes the hanging wall to slide down. Normal faults can build huge mountain ranges in regions experiencing tension ( Figure below ). Q: What makes up most of the inside of a plant? Choices: - star tissue - animal tissue - mitochondria - ground tissue A:
Answer: ground tissue

Question: Answer the following question given this paragraph: The amount of material left over after a certain number of half-lives can be easily calculated. Q: What term is used to describe a chemical released by an animal that affects the behavior or physiology of animals of the same species? Choices: - enzyme - isolate - amino - pheromone A:
Answer:
pheromone