The World Around Us for 800 The loss of a single one of these can affect the food chain of an entire ecosystem.
The World Around Us for 800 What is single species?
The World Around Us for 1000 We need air to breathe, but cars, trucks, and factories, or even fires can make it dirty, which is called this.
The World Around Us for 1000 What is air pollution?
Plants and Animals for 200 These provide food and habitats for animals, hold soil in place to reduce erosion and improve water quality, and provide people with food, materials for shelter, fuel to warm us, and replenish the air we breathe..
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