Question

question 2
how does human activity affect fish reproduction? answer by providing two causes and explaining how they affect fish populations.

you can start your answer with:

• one way humans affect fish populations is...
• another way humans affect fish populations is...
• as a result, the fish populations...

answer using 3 to 4 complete sentences.

Explanation:

One way humans affect fish populations is through aquatic pollution, such as runoff of agricultural pesticides and plastic waste. These contaminants disrupt fish hormone systems, impairing their ability to breed, find mates, or produce viable eggs. Another way humans affect fish populations is through the destruction of critical spawning habitats like mangroves and river deltas, often via coastal development or dam construction. This removes safe spaces for fish to lay eggs and for young fry to mature, reducing successful reproduction rates. As a result, the fish populations decline over time, with some species facing increased risk of local extinction as their reproductive success drops below sustainable levels.

Answer:

One way humans affect fish populations is through aquatic pollution from agricultural runoff and plastic waste, which disrupts fish hormone systems and impairs their ability to breed or produce viable eggs. Another way humans affect fish populations is through the destruction of spawning habitats like mangroves and river deltas via coastal development or dams, eliminating safe spaces for egg-laying and fry maturation. As a result, the fish populations decline over time, with some species facing heightened risk of local extinction due to unsustainably low reproductive success.