Answer:
he hypothalamus and pituitary gland, which are in the brain, initiate puberty. The hypothalamus secretes luteinizing hormone-releasing hormone, which stimulates the pituitary to secrete luteinizing hormone and follicle-stimulating hormone. Luteinizing hormone causes the testes to produce testosterone. Follicle-stimulating hormone (plus testosterone) causes the testes to produce sperm. Testosterone is responsible for the development of secondary sex characteristics, features that stimulate male development (including characteristics that are not part of the reproductive system, such as facial hair growth and voice change).
Explanation:
The answer is the cataract. A cataract is a shadowing of the lens in the eye which leads to a decline of vision. Cataracts often progress slowly and can affect one or both eyes. Symptoms may include faded colors, blurry vision, and halos around light, trouble with bright lights, and trouble seeing at night.
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body. Nutrients from the digestive tract and storage sites to the rest of the body.
Answer:
Humans
Explanation:
People just throw trash where ever that want and don't think about the animals and pretty soon we are going to die because of other people who don't care about pollution
