a. phosphate group, sugar, nitrogen base.
b. if it is DNA- deoxyribose sugar and if it is RNA- ribose sugar
c.Nitrogen base
d. Adenine, Gaunine, cytosine, Thymine.

velocity is a vector so it has a magnitude and direction so the answer would be B
According to given information,
Distance = 6 + 10 = 16 m
Displacement = 4 m
So, Distance - Displacement = 16 - 4 = 12 m
So, your final answer is 12 m.
Hope this helps!
Answer: C polluted water and soil can cause many deseases and side effect towards humans
Mitochondria - The mitochondria is referred to as the power house of the cell. Its main function if to produceenergy for cell by the process of cellular respiration. The energyproduced is ATP. Endoplasmic Reticulum - It is a network for transportation of certain substances in and out of the nucleus.