Speciation<span> is the term used to describe the formation of a new </span>species<span> due to </span>natural selection<span>.</span>
Answer:
luteinizing hormone.(LH).
Explanation:
Luteinizing hormone specially stimulates cells in the seminiferous tubules to particularly secrete testosterone, which has a role in sperm production and developing male secondary sex characteristics.
A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.
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<em>Hope this helped, love!</em>
The answer is a. It’s the only one with a control group
