The force of attraction between things that have mass called. Someone please help

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

Observations show that interstellar clouds can have almost any shape and

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius