Question

explain how agriculture affects coral reefs.

Explanation:

Agriculture can lead to runoff of fertilizers (which causes algal blooms that smother corals by blocking sunlight and using up oxygen), pesticides (toxic to coral organisms), and sediment (which clouds water, reducing light for coral - symbiotic algae).

Answer:

Agriculture - related runoff of fertilizers causes algal blooms (smothering corals by blocking light and consuming oxygen), pesticides are toxic to coral organisms, and sediment runoff clouds water reducing light for coral - symbiotic algae.