The work is path independent since we have a conservative force.
Thus
Answer (1)
B.) A group of cells working together. If it were D.), the question would have had to be A cell is made up of...
River shore is located at distance

speed of the woman is given as

now the time taken by the woman to cover the distance is


for the same time interval the dog will run to and fro with speed 4.5 m/s
so the total distance moved by the dog is given by



<em>so the total distance that dog will move is 7200 m or 7.2 km</em>
The sun provides light and energy for plants to live and we need plants to breathe
I hope this helps you