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.
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The stratospheric ozone layer absorbs ultraviolet (UV) radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms. UV rays cannot be seen or felt, but they are very powerful and change the chemical structure of molecules.
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Well, if you thing about a pool ball on the table? Its a hard question to answer but It is B The net force is zero! It should be zero!
Answer: Option C) Pluto
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Pluto is described as a dirty ice ball of frozen gases and rocky material. It was the ninth planet to be discovered.
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The leaves and stems of many desert plants have a thick, waxy covering. This waxy substance does not cover the stomata, but it covers most of the leaves, keeping the plants cooler and reducing evaporative loss. Small leaves on desert plants also help reduce moisture loss during transpiration.