Explanation:
the last option is the correct answer
The water would freeze across the surface of the lake, blocking the dissolving of oxygen and nutrients. <span>Water is actually less dense when frozen, which is why ice cubes and ice bergs all float. This is also why you can ice skate on a lake if the ice gets thick enough on the surface. Many organisms that live in freezing lakes have special adaptations which help them survive.</span>
Answer:
it is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Explanation:
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