Ques: Q: What is it called when body's internal environment is stable? Read this paragraph and choose the correct option from the provided answers: The tennis player in Figure below has really worked up a sweat. Do you know why we sweat? Sweating helps to keep us cool. When sweat evaporates from the skin, it uses up some of the body's heat energy. Sweating is one of the ways that the body maintains a stable internal environment. It helps keep the body's internal temperature constant. When the body's internal environment is stable, the condition is called homeostasis . Choices: - synchronicity - hypothesis - ketosis - homeostasis A:
Ans: homeostasis

Ques: Q: Our global ecological footprint depends on resource use per person and what population factor? Read this paragraph and choose the correct option from the provided answers: Choices: - population fluctuation - population sample - population decrease - population density A:
Ans: population density

Ques: Q: The way of learning that involves reward and punishment is called? Read this paragraph and choose the correct option from the provided answers: Conditioning is a way of learning that involves a reward or punishment. If you ever trained a dog to obey a command, you probably gave the dog a tasty treat each time he performed the desired behavior. It may not have been very long before the dog would reliably follow the command in order to get the treat. This is an example of conditioning that involves a reward. Choices: - foolish - mixed - pressure - conditioning A:
Ans: conditioning

Ques: Q: What is the biggest risk associated with using nuclear energy? Read this paragraph and choose the correct option from the provided answers: The main concern over the use of nuclear energy is the risk of radiation. Accidents at nuclear power plants can release harmful radiation that endangers people and other living things. Even without accidents, the used fuel that is left after nuclear fission reactions is still radioactive and very dangerous. It takes thousands of years for it to decay until it no longer releases harmful radiation. Therefore, used fuel must be stored securely to protect people and other living things. You can learn more about the problem of radioactive waste at this URL: http://www. youtube. com/watch?v=OPQ97LVRuuM. Choices: - explosion - mutation - fire - radiation A:
Ans:
radiation