TRUE: The Earth has five layers of gas, The atmosphere is mostly composed of nitrogen, The atmosphere contains nitrogen, oxygen, and carbon dioxide, Animals and plants need the gases in the atmosphere to live, During the evaporation, the liquid water turns vapor, During the condensation, the water turns into clouds, During the precipitation, the water can form snow, hail, sleet or raing, Humans need oxygen, 78% of the gas in the atmosphere is nitrogen, about 21% of atmosphere is oxygen, FALSE: The Earth has 3 layers of gas, The atmosphere is composed only of oxygen, We need carbon-oxygen to breath, plants don't need any gases because they are not animals, We can find water only at the liquid form, Precipitation and condensation are the same things, The water cycle occurs only when it rains, The animals need nitrogen to breath, The troposphere is the farthest layer from the Earth, The troposphere contains only a small part of the air in the atmosphere,

Science 6th grade - Atmosphere and hydrosphere

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