Which layer of earth’s atmosphere contains very little water vapor, has an atmosphere pressure of 0.25 atmosphere, and has an air temperature that increases with altitude?

How do you transfer mrna into codons ? i'm so confused : (

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring

Which of the following terms best matches this definition: the process where humans choose the traits that will be present in the next generation through breeding. question 4 options: genetic determinism artificial selection acquired selection natural selection