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Which statement accurately compares fast-flowing and slow-flowing areas of streams and rivers?

Fast-flowing areas are usually warmer than slow-flowing ones.
Fast-flowing areas usually have cloudier water than slow-flowing ones.
Fast-flowing areas usually contain more oxygen than slow-flowing ones.
Fast-flowing areas usually have more plant growth than slow-flowing ones.

fast- flowing areas usually contain more oxygen than slow-flowing ones.

Explanation:

looking at the statement that accurately compares fast-flowing and slow-flowing areas of stream and water, we need to understand how they flow. a stream flow downhill and it can also flow in a perfect channel, except when flooding occurs and water overflows its channel and spread out across the area of the land. so, fast-flowing generally have higher levels of dissolved oxygen more than slow-flowing because slow-flowing are aerated.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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