This belongs in the bio section but the structure are the chromosomes that contain the DNA strands themselves containing the genetic information of any living things
The awnser to your problem would be a as in energy
Answer:

Explanation:
According to the question
net force F = 2.20×10^6 N
displacement 
from figure , the horizontal forces are same in magnitude and opposite direction.
so , neglect these two forces.
we can take only vertical components of the force.
total force F' = F cos 19° + F cos 19°
= 2×F×cos 19° ................. (1
therefore , total work is
W = F'S
= (2F cos19)×S


Answer:
I am not really sure but i think its option 2
Explanation:
Because the sun evaporates the water out of the clothes