The nitrogen base pairs in the dna molecule are cytosine and .

space 1.
a) guanine
b)thymine

space 2.
a)guanine
b)adenine
c)thymine

10pts.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Apart of an ecosystem that can restrict the growth of a population is referred to as

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms