Which of the following is true about the genetic code? a. it is universal among all life on earth. b. it is universal among animals. c. it codes for chains of triglycerides. d. it is unique to humans

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

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.