Your answer should be B. “Myoglobin”
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The limit of ecosystems to give advantages to people, that is to give biological community administrations, gets from natural cycles of water, nitrogen, carbon, and phosphorus. These procedures have now and again been altogether altered by human movement. Changes have been quicker in the second 50% of the twentieth century than at some other time in recorded mankind's history.
Answer:
1st point describes both the sperm and ovum.
Because the stomach is lined by a mucous membrane (the gastric mucosa)