Question

question 11 of 20 :
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1. how does a closed lake differ from an open lake?

a. a closed lake contains standing water.
b. a closed lake contains fresh water.
c. a closed lake has no outlet stream.
d. a closed lake has no inlet stream.
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Explanation:

• Option A: Both closed and open lakes can have standing water, so this is not a distinguishing factor.
• Option B: Closed lakes often have saline water (due to no outlet for evaporation - left minerals), while open lakes can have fresh water, so this is incorrect.
• Option C: A closed lake is defined as a lake with no outlet stream (water leaves mainly by evaporation), while an open lake has an outlet (and inlet) stream. This is the key difference.
• Option D: Closed lakes can have inlet streams (water comes in but doesn't go out via a stream, only evaporates), so this is incorrect.

Answer:

C. A closed lake has no outlet stream.