What two things do astronomers need to know about a star in order to calculate its luminosity or absolute magnitude? A. color and size B. color and distance C. distance and brightness D. size and distance

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.

Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.