Which of the following is a measure of the amount of light a star directly emits? A. Brightness B. Luminosity C. Wavelength D. Intensity

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

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