Match the conservation actions to their effects. Build walls along steep slopes.
Purify water to remove industrial byproducts
and other waste products.
introduce tough laws to ban activities such as
hunting, fishing, and poaching.
Prevent aquatic ecosystems from declining.
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Prevent exploitation of species.
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Prevent soil erosion.

Build walls along steep slopes. - Prevent soil erosion.Purify water to remove industrial byproducts - Prevent aquatic ecosystems from declining.introduce tough laws to ban activities such as  hunting, fishing, and poaching - Prevent exploitation of species.

Explanation:

Most of the conservation includes the use of walls to prevent erosion, purification of water, and the introduction of laws that focus on the prevention of exploitation and overutilization of natural resources. Various laws have been made related to hunting, poaching, and fishing. Other laws related to the formation of natural reserves and protected forest lands.

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