There are only 20 amino acids used in all species on Earth with very little variation. What might scientists conclude from this?

Graphs you see question 5 options: the change in data over time the relationship between different dependent variables the relationship between the independent variable and the dependent variable/s the relationship between different independent variables

Cedric has a low fever and minor aches. yesterday, he went to the doctor for his booster shot and receive the flu shot. which best explains why he has this reaction?

Which three statements represent the benefits of performing experiments using computer simulations?