Question

question 5 (multiple choice worth 2 points)
eutrophication can cause excess algae growth. which of the following describes how nutrients contribute to eutrophication?
released naturally from rocks during weathering
come from fertilizer and sewage runoff
released by dead and decaying organisms
come from water waste from nuclear power plants

Explanation:

Eutrophication is primarily driven by excess anthropogenic nutrients entering water bodies. Fertilizer runoff (rich in nitrogen and phosphorus) from agriculture and sewage runoff (containing human waste and food residues with nutrients) are the main human-caused sources that trigger excessive algae growth, the key feature of eutrophication. Natural nutrient sources like rock weathering or decaying organisms are part of natural cycles but do not cause the accelerated eutrophication in question, and nuclear power plant waste does not contribute nutrient pollution for algae growth.

Answer:

B. Come from fertilizer and sewage runoff