State two variables the student needs to control when using this method to compare the mass of DNA from these two fruits.

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

The diagram illustrates the activity of vesicles during a cellular process.

Which codon is the code for the amino acid histidine (his)?