Random question?

The periodic table of the elements is systematically organized according to the

Random question?

Which would provide evidence of seafloor spreading?

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When large areas of the rainforests are cleared and burned, climate can be affected. Which best explains how rainforest destruction can contribute to the greenhouse effect?

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In the initial stages of manned space exploration, scientists needed to address adequate nutrition to provide astronauts with energy throughout the mission. Which of these criteria could not be used when considering food and energy for astronauts during manned space flights?