If the masses of objects increase and their distance from each other remains the same, then the force of gravity between the two objects
a) decreases.
b) increases.
c) remains the same.
d) increases then decreases.

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

What layer of the atmosphere is directly above the troposphere?