That instant ... typically some moment on june 21 or 22 ... marks
the beginning of the northern hemisphere Summer.
Answer:
The answer is "B: They both involve duplicating chromosomes'
Explanation:
Deoxyribonucleic (DNA) pronouced (de-ok" si-ri"bo-nu-kle'ik). It is a Nucleic Acid. DNA is one of two major classes of molecules, the other is RNA. Typically, DNA is found in the nucleus (control center) of the cell, where it constitutes the genetic material, or genes.
<span>DNA is a long, double stranded polymer-a double chain of nucleotides.</span>
B. Every ecosystem has weather
