Final answer:
Building dams can have positive effects on the environment by creating ponds for other animals and plants to live in.
Step-by-step explanation:
Building dams can have both positive and negative effects on the environment. One positive effect of dams is that they create ponds for other animals and plants to live in. These ponds provide habitat for various species and increase biodiversity. Additionally, the dams can help in flood control by storing excess water during heavy rain and releasing it slowly.
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