There are only 4 different nitrogenous bases in DNA. How do you think a cell is able to make so many different proteins with such a small code?

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?

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

What is the surface temperature of the ocean where hurricanes form? greater than 80 celsius approximately 27 celsius at least 76 celsius less than 10.5 celsius