It could be C or A but I’m leaning towards C
The correct answer is A plant tissue samples should be free of soil particles
Crossing over during meiosis
Skin is a barrier that serves as one of the body's first lines of defense against harmful microbes. Specialized immune cells within skin tissue help to fight invading organisms. Past work by an NIH research team showed that commensals can help the body's immune cells fight disease-causing microbes.
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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.