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Yes, there is a variety of things you can do to wear down the enamel. A few of the biggest things are: Drinking Coffee or soda, eating acidic foods and not brushing your teeth. Sadly you are not able to grow back your enamel after if it fully gone so it's best to protect your enamel as much as possible.
Answer
They produce hormones and sperm
Explanation
The Testes are a pair of ovoid glandular organs which are responsible for the production of sperm cell and the male sex hormone called testosterone. The testes produce 12 trillion sperm in a male’s life time. A single ejaculation releases 400 million sperm. Testes are therefore the major reproductive organs of the male. The epididymis nourishes the sperm themselves. The scrotum is the pouch like skin that protects the testes. Copulatory has to do something with sexual activities
Answer: Bone marrow
Explanation:
Bone marrow can be defined as a spongy tissue inside our bones like femur, and hip bones. The bone marrow comprises of stem cells which will differentiate and divide to produce red blood cells. The role of red blood cells is to supply oxygen to all the parts of the human body. The bone marrow is also the site of calcium deposition. The bones consists of more amount of calcium then any other organ in the body. The bones comprises of calcium salts like calcium phosphate.
