The correct answer is option A, " Energy production"
Reason:
The intracellular communication is the process through which one cell interacts with other cell for proper functioning of the body. The two major types of intracellular interaction involve:
a) Chemical Synapse – In this a chemical released by one cell is detected by receptor on another cell. For example the transmission of sodium and potassium ion across the membrane through the binding of Acetylcholine (Ach) with ACh receptors.
b) Electrical Synapse – In this the cell which are connected through non selective, low – resistance pore between pre- and postsynaptic neurons known as gap junction.
This is the case in option B, C and D.
People do release carbon dioxide during respiration and gas exchange. But this does not make a great amount of that plus, the plants requires them for photosynthesis.
However, nowadays people release a large amount of carbon dioxide into the atmosphere due to the operation of factories, and driving cars. The burning of fossil fuels, which generates electricity, is the main reason of the increasing carbon dioxide in atmosphere.
This can lead to greenhouse effect, since carbon dioxide can trap heat inside and still absorb more heat at the same time. And then, global warming occurs and it affects living organisms.
<span>B: adds aesthetic value to the landscape. Think about it, out of
all your options, that's the one that doesn't really help anything.
</span>