Ques:Q: Energy cannot be created or destroyed - it can only change what? Read this paragraph and choose the correct option from the provided answers: All living things need energy. They need it to power the processes of life. For example, it takes energy to grow. It also takes energy to produce offspring. In fact, it takes energy just to stay alive. Remember that energy can't be created or destroyed. It can only change form. Energy changes form as it moves through ecosystems. Choices: - kind - fluid - shape - form A:

Ans:form
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Ques:Q: Chemical and solar cells are devices that change chemical or light energy to what? Read this paragraph and choose the correct option from the provided answers: Chemical and solar cells are devices that change chemical or light energy to electrical energy. You can read about both types of cells and how they work below. Choices: - cellular - occurring energy - temperature energy - electrical energy A:

Ans:electrical energy
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Ques:Q: What is the time interval required for one complete wave to pass a point called? Read this paragraph and choose the correct option from the provided answers: The time interval required for one complete wave to pass a point is called the period . During the period of the wave, an entire wavelength from one crest to the next crest passes a position. The number of waves that pass a single position in one second is called the frequency . The period of a wave and its frequency are reciprocals of each other. Choices: - cycle - minute - half-life - period A:

Ans:period
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Ques:Q: Ingestive protists extend their cell wall and cell membrane around the food item, forming a what? Read this paragraph and choose the correct option from the provided answers: Ingestive protists ingest, or engulf, bacteria and other small particles. They extend their cell wall and cell membrane around the food item, forming a food vacuole . Then enzymes digest the food in the vacuole. Choices: - food pocket - fuel vacuole - protective bubble - food vacuole A:

Ans:
food vacuole
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