Vertical stairs :P: W = (20 N) * (6.0 m) * cos (0 degrees) = <span>120 Joules
At 45 degrees: W = (20.0 N) * (6.0 m) * cos (45 degrees) =
(20N) * 6m) * (</span><span>0.707106781) = 84.853 Joules</span>
The flattening of our solar system likely helped changed random motions into more orderly ones
I am pretty sure that the answers are:
The daughter plant in genetically similar to the parent plant
and
The leaf cells of the daughter plant have 24 chromosomes
Hope this helps!