Clarify the concept of development.

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

What word is used to describe differences of individual organisms

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun