Answer:
crossing over
Explanation:
I had it on a bio exam. i got it right
<span>This is called an intron. An intron is a sequence that is removed during RNA splicing. It's both the DNA sequence inside a gene and the related sequence in an RNA transcript. Introns are found inside the genes of almost every organism, and also inside viruses.</span>
The answer is Primary producers.
This is a sample of a food chain:
Quaternary Consumer > Tertiary Consumer > Secondary Consumer > Primary Consumer > Primary Producer (base)
Hope this helps.
They study rocks from both the moon and the earth