How is science useful or helpful in Peru? This is for my project it about science in Peru help Please!!

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different

Which of the following is not associated with invasive species?