Aside from earth, which of the following inner planets once had liquid water on its surface?

How have the greenhouse gasses increased from the year 2000 to 2018

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

The fact that the total amount of energy in a system remains constant is a(n)