Pollution from industries and agriculture poses a threat to Assam’s fisheries by:

The correct answer is: d) All of the above

Pollution from industries and agriculture poses a threat to Assam’s fisheries by decreasing water quality, harming aquatic life, and affecting fish health.

• Decreasing water quality: Pollution from industries and agriculture can contaminate water with chemicals, heavy metals, and other pollutants. This can make the water unsafe for fish to live in and can also make it difficult for fish to reproduce.
• Harming aquatic life: Pollution can also harm aquatic life directly. For example, some pollutants can be toxic to fish, while others can cause fish to become sick or deformed.
• Affecting fish health: Pollution can also affect fish health indirectly. For example, pollution can damage fish habitats, making it difficult for fish to find food and shelter. This can make fish more susceptible to disease and can also make it difficult for them to reproduce.

The effects of pollution on Assam’s fisheries are a serious concern. Pollution is already having a negative impact on fish populations in the state, and it is likely to get worse in the future if nothing is done to address the problem. It is important to take steps to reduce pollution from industries and agriculture in order to protect Assam’s fisheries.