There can be multiple answers to this question so I tried to give you them.
One could be Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter.
The next could also be a Watt, which is the power from a current of 1 Ampere flowing through 1 Volt.
And 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour.
Blood flow will increase as blood vessels expand.
Small molecules are able to pass through a cell membrane because the membrane itself is semipermeable. Larger molecules require the cell expend energy to transport the molecules across the cell membrane, usually by engulfing them.
Answer:
It has a very high Maintenance and set up cost. The technology needed is not yet mature so alot of development is needed. Many rural farmers may loose living and become unemployed