For her summer science internship, Jill has been tasked with gathering samples from the bottoms of various lakes and testing them. If a lake does not turn over, what will she MOST expect to find?

Question

(1 point)
Responses

low carbon dioxide levels

low carbon dioxide levels

high methane levels

high methane levels

low nutrient levels

low nutrient levels

high oxygen levels

Answer 1

If a lake does not turn over, Jill will MOST expect to find high methane levels.

In a stratified lake that does not turn over, the bottom layer can become anoxic (lacking oxygen), which can lead to the production of methane by anaerobic bacteria that decompose organic materials.