A proton has a positive charge, it is located in the nucleus and the mass is 1 amu. The charge of a neutron is neutral, it is located inside the nucleus and the mass is 1 amu. An electron has a negative charge, is located outside the nucleus and the mass is approximately 0 amu.
Answer:
By providing support and structure for the cell
Explanation:
From what I am able to understand from this question, the second answer makes the most sense.
Infectious disease is a sickness that can be passed one to someone else, like the flu. a lifestyle disease are sicknesses that you can not get or give to other people.
The question is referring to primary succession, which begins with the colonization of living organisms in an area that hasn't had any living organisms before.
This kind of succession begins with microorganisms, and plants such as lichens and mosses.
Given that a rock outcrop is a terrestrial environment, lichens (C) are most likely to be the firsts organisms.
Answer:
FSH and LH are released from the anterior pituitary gland
Explanation:
The anterior pituitary secretes the trophic hormones. Two of them are the gonadotrophic hormones, that affect the gonads (testes and ovaries). These hormones are the follicle-stimulating hormone (FSH) and the luteinizing hormone (LH). In females, these hormones help the ovocytes and the follicles to maturate. At the beginning of the female cycle, high concentrations of these hormones stimulate the ovary follicle, which grows and secretes estrogens. Under the influence of these last ones, the endometrium gets regenerated. When concentrations of estrogens get high (before the middle of the cycle), it occurs a pic in LH secretions from the hypophysis (pituitary gland), which produce the ovocyte expulsion: <em>ovulation</em>. After that, LH and FSH concentrations fall.