the answer is d they are essential to all ecosystems
Answer:

Explanation:
Given that:
p = magnitude of charge on a proton = 
k = Boltzmann constant = 
r = distance between the two carbon nuclei = 1.00 nm = 
Since a carbon nucleus contains 6 protons.
So, charge on a carbon nucleus is 
We know that the electric potential energy between two charges q and Q separated by a distance r is given by:

So, the potential energy between the two nuclei of carbon is as below:

Hence, the energy stored between two nuclei of carbon is
.
B. 1/2p
From the relation
P1V1=P2V2
P2=P1V1/V2
If everything equals one
P2=1*1/2(1)
That would equal 1/2
I hope this helps
Please mark as brainliest
Time should not be messed with
for bad things could happen
so think before you act or you'll regret it
Force is directly proportional to rate of change of velocity so it increasing, velocity (motion of the object) will also increase.
Hope this helps!