The wide range of colors in algae depends upon the presence of a)chlorophyll a b)chlorophyll b c)chlorophyll c d)accessory pigments

Is snow a type of precipitation? explain why or why not.

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?