What do cells need to do between divisons to make sure that they don’t just get smaller ?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? 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 .

Explain how organisms could be harmed by high levels of salt from roadways?