1) A community of living things that live in a particular place and the relationships between them. a) biology b) ecosystem c) temperature 2) What type of ecosystem are fresh water and salt water? a) aquatic ecosystem b) liquid ecosystem c) land ecosystem 3) This is the type of water that doesn't move. a) flowing water b) river c) still water 4) The water in this ecosystem has a lot of salt. a) still water b) freshwater ecosystem c) saltwater ecosystem 5) This is the type of ecosystem that is on land. a) terrestrial ecosystem b) land ecosystem c) aquatic ecosystem 6) This depends on the amount of rain in an area. a) temperature b) humidity c) relief 7) This is the shape of the land a) temperature b) humidity c) relief 8) The layer of ground where plants grow roots. a) relief b) soil c) rock 9) This type of rock comes from lava in volcanoes. a) basalt b) granite c) coal 10) This rock forms at the bottom of the sea. a) conglomerate b) granite c) limestone 11) The variety of living things on earth is called? a) biology b) biodiversity c) biosphere 12) The disappearance of a species is called? a) extinction b) death c) destruction 13) Which among these is a benefit of biodiversity? a) too much hunting or overfishing. b) it provides raw materials and food. c) it harms land and air. 14) Which among these is a main cause of extinction? a) too much hunting or overfishing. b) it provides raw materials and food. c) it provides energy sources. 15) Which among these is a way to protect ecosystems? a) leave trash outside b) waste water c) recycle waste

Ecosystems

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