100 points, help yo boi out in Science, Giving brainy to best answer Question 1 :
In one to two sentences, explain why low-pressure systems are associated with bad weather?

Question 2:
In 1–2 sentences, explain what biome comprises most of Antarctica and why the continent is described as being part of this biome.

What was photo 51 with rosalind franklin?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

Is dna the same in every cell in the human body explain your answer