Answer: Cells typically receive signals in chemical form via various signaling molecules.
Answer:
The Leydig cells produce testosterone, which also is responsible for the secondary sexual characteristics of males. In females, FSH and LH cause estrogen and progesterone to be produced. They regulate the female reproductive system which is divided into the ovarian cycle and the menstrual cycle.
Explanation:
Marine species are affected by climate change and examples of how their affected would be stormy weather, c<span>oral bleaching, and also altered lifestyles. </span>
Answer:
The sunlight passes through the gas. Nothing happens.
Answer:
<em><u>sympatric speciation and habitat isolation</u></em>
Explanation:
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