Science 9 Deped Unit: 2. EARTH'S ATMOSPHERE

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_____ is/are an important part of the hydrologic cycle. Meteorites Water vapor Nitrogen Living organisms

Water vapor

The atmosphere is considered _____ because of its ability to transport and distribute materials throughout the globe quickly. a superhighway stagnant a blanket a shield

a superhighway

Some people consider the earth to be _____ because of its dynamic processes or cycles. stagnant alive changing

alive

Without the atmosphere, most life on Earth would be impossible. True False

True

Nitrogen is important to life because it is part of _____. plant photosynthesis the air we breathe DNA, amino acids, and proteins lightning storms

DNA, amino acids, and proteins

Select all of the answers that apply. Which of the following are ways the atmosphere supports life? cycles essential elements: C, O, and N contains trace gases transports and distributes heat blocks harmful UV rays

cycles essential elements: C, O, and N transports and distributes heat blocks harmful UV rays

Select all of the answers that apply. Biogeochemical cycles _____. disrupt the distribution of materials help keep the earth warm recycle essential materials are needed by living things

help keep the earth warm recycle essential materials are needed by living things

In the carbon-oxygen cycle, carbon dioxide is used for _____ and oxygen is used for _____. respiration, photosynthesis ozone, respiration photosynthesis, respiration evaporation, condensation

photosynthesis, respiration


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