Answer:
The middle part
Explanation:
We have rocks and metal on Earth.
Hormones play an important role in the sexual maturity in a male and female. Sexual maturity in humans starts at puberty which is guided by hypothalamus by secreting hormone that acts on pituitary gland. The anterior portion of the pituitary gland in response secretes gonadotrophins. Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH) act on the gonads of female and male which secrete other hormones in the response. The testes of male secrets hormone androgen while the ovaries of female secrete estradiol. Estradiol and androgen are responsible for sexual characteristics of male and female.
Answer:
I think (c) is the correct answer
Explanation:
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Answer:
The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse. The direction of diffusion is said to be 'down' or 'with' the concentration gradient.
Explanation:
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