A major point of understanding natural selection is that not all organisms in a population get to reproduce. Consider the term fitness as used in biology. How does this term relate to natural selection?

Based on your answer above, do organisms with higher fitness mean that they have survived to an advanced age? Why or why not?

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 .

Cells destroy body cells infected by a virus or bacteria.

This rapid change in species that rarely leaves behind fossil evidence is referred to as