1) An organism is also known as: a) Living thing b) Population 2) A group of the same organisms living in one place is called __________. a) Population b) Community 3) A populations of different organisms that live in the same place is called _____. a) Population b) Community 4) Which of these is the cause of climate change? a) Rising sea levels b) Global warming 5) The increase in the Earth's temperature due to the release of greenhouse gases is called ______. a) Chlorofluorocarbon b) Global warming 6) Which pollutants cause the depletion of the ozone layer? a) Carbon dioxide b) CFCs 7) Which of these are examples of greenhouse gases? a) Carbon dioxide and methane gas b) Oxygen and nitrogen 8) The cutting down of trees by humans to clear forests is called ______. a) Deforestation b) Soil erosion 9) The rainwater containing acid, formed when harmful gases dissolve in rainwater is called _________.  a) Acid rain b) Greenhouse gases 10) The overflow of water from a river, lake sea which results in the land getting submerged is called ______. a) Drought b) Flood

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