Answer:
The correct option is;
A, B, and C, only
Explanation:
The amino group is the functional group of the form CH-NH₂ consisting of single bonds formed between hydrogen atoms, aryl groups, alkyl groups or two or more of such groups combined together bonded with a nitrogen atom. An amine is an organic compound that has an amino group in its composition or structure
Therefore, the amino group can be found in the molecules of A, B, and C only.
Answer:
Hmm.
Explanation:
The ocean is the dominant physical feature on our planet Earth, covering approximately 70% of the planet's surface.
I think it might be A bit I’m not sure hope this helps
Answer:
missing - biostatics
Explanation:
Longitudinal studies differ from one-off, or cross-sectional, studies. The main difference is that cross-sectional studies interview a fresh sample of people each time they are carried out, whereas longitudinal studies follow the same sample of people over time.
hope this helps :)
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
