The answer would be option C
One type of observation that the scientist use is the scientific method and the independent variable and dependent variable
When doing orienteering at night with a map have to use only red lights on headlamps or you would have to wait 2-3 minutes for your eyes to re-adapt.
I believe the answer is
A macromolecule is a polymer with a high molecular mass and includes four main groups: carbohydrates, lipids, proteins, and nucleic acids.