- DNA contains four types of nitrogenous bases. One of these bases is A.)thymine.

B.) glucose.

C.) ribose.

D.) uracil.

Which layer will become saturated first when rain falls?

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Using meiosis, the sporophyte produces spores that are .