NEET BIOLOGY

Detailed explanation-1: -Algae blooms can deplete oxygen in water and lead to low dissolved oxygen levels. When masses of algae die and decompose, the decaying process can deplete oxygen in the water causing the water to become low in oxygen and when oxygen levels become too low, fish suffocate and die.

Detailed explanation-2: -Low dissolved oxygen (DO) primarily results from excessive algae growth caused by phosphorus. Nitrogen is another nutrient that can contribute to algae growth. As the algae die and decompose, the process consumes dissolved oxygen.

Detailed explanation-3: -Algal blooms can reduce the ability of fish and other aquatic life to find food and can cause entire populations to leave an area or even die. Harmful algal blooms cause thick, green muck that impacts clear water, recreation, businesses and property values.

Detailed explanation-4: -The overgrowth of algae consumes oxygen and blocks sunlight from underwater plants. When the algae eventually dies, the oxygen in the water is consumed. The lack of oxygen makes it impossible for aquatic life to survive.

Detailed explanation-5: -The ability of fish and other aquatic life is reduced to find food and can cause entire populations to leave an area or even die due to starvation. Harmful algal blooms cause thick, green muck that impacts clear water. As it produces various toxins it leads to the death of aquatic organisms.