In 1–2 sentences, explain what biome comprises most of Antarctica and why the continent is described as being part of this biome. PLS HELP! pls answer this as soon as posible I really need help pl!!!

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?