Lots of points - pretty simple question - please be specific Why are the atmosphere, biosphere, lithosphere, and hydrosphere all called “Earth’s life-support system”?

Which food could be transported in a galvanized metal container?

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

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water