Q: A fish's stream-lined body that reduces water resistance is an example of what kind of response to an aquatic lifestyle? Read this paragraph and choose the correct option from the provided answers: Many structures in fish are adaptations for their aquatic lifestyle. For example, fish have a stream-lined body that reduces water resistance while swimming. Choices: - natural selection - retraction - evolution - adaptation A:
adaptation

(Question)
Q: What is the raw material for evolution by natural selection called? Read this paragraph and choose the correct option from the provided answers: Choices: - pattern variation - mutation - comparable variation - genetic variation A:
(Answer)
genetic variation

Ques: Q: The turbine of a windmill spins and creates what? Read this paragraph and choose the correct option from the provided answers: Wind power uses moving air as a source of energy. Some types of wind power have been around for a long time. People have used windmills to grind grain and pump water for hundreds of years. Sailing ships have depended on wind for millennia. Wind is now used to generate electricity. Moving air can make a turbine spin, just like moving water can. Moving air has kinetic energy. When wind hits the blades of the turbine, the kinetic energy makes the blades move. The turbine spins and creates electricity. Choices: - grains - pollution - lightning - electricity A:
Ans: electricity

(Q).
Q: The entropy is decreasing because a gas is becoming a what? Read this paragraph and choose the correct option from the provided answers: The entropy is decreasing because a gas is becoming a liquid. Choices: - swirl - solid - vapor cloud - liquid A:
(A).
liquid

Ques:Q: What gas do the lungs give up as they take in oxygen? Read this paragraph and choose the correct option from the provided answers: Pulmonary circulation is the part of the circulatory system that carries blood between the heart and lungs (the term "pulmonary" means "of the lungs"). It is illustrated in Figure below . Deoxygenated blood leaves the right ventricle through pulmonary arteries, which transport it to the lungs. In the lungs, the blood gives up carbon dioxide and picks up oxygen. The oxygenated blood then returns to the left atrium of the heart through pulmonary veins. Choices: - carbon monoxide - methane - nitrogen - carbon dioxide A:

Ans:carbon dioxide

Q: Many ionic compounds occur as hydrates, compounds that contain specific ratios of loosely bound water molecules, called waters of hydration. waters of hydration can often be removed simply by doing this? Read this paragraph and choose the correct option from the provided answers: Hydrates Many ionic compounds occur as hydrates, compounds that contain specific ratios of loosely bound water molecules, called waters of hydration. Waters of hydration can often be removed simply by heating. For example, calcium dihydrogen phosphate can form a solid that contains one molecule of water per Ca(H2PO4)2 unit and is used as a leavening agent in the food industry to cause baked goods to rise. The empirical formula for the solid is Ca(H 2PO4)2H2O. In contrast, copper sulfate usually forms a blue solid that contains five waters of hydration per formula unit, with the empirical formula CuSO 45H2O. When heated, all five water molecules are lost, giving a white solid with the empirical formula CuSO 4 (Figure 2.9 "Loss of Water from a Hydrate with Heating"). Choices: - cooling - observing - melting - heating A:
heating