Question

why are plants unable to grow at the bottom of lakes?
○ the water is colder at the bottom.
○ sunlight does not reach the bottom.
○ groundwater feeds into the bottom.
○ less fresh water is found at the bottom.

Explanation:

Plants rely on sunlight for photosynthesis, the process that allows them to produce energy and grow. In deep lakes, sunlight cannot penetrate to the bottom, removing the key resource plants need to survive. The other options are not the primary limiting factor: cold water can support some aquatic plants, groundwater input does not prevent growth, and lake water is generally fresh throughout.

Answer:

Sunlight does not reach the bottom.