C. It's necessary for the survival of the individual
It is 1 amu.....................
I think you forgot to give the options along with the question. I am answering the question based on my knowledge. Appalachian mountain range is well known for providing coal, copper and iron. Any of these choices can be your answer. Coal is actually the most abundant. I hope that the answer helps you.
In photosynthesis, light dependent and independent reactions are the two set of
reactions that occur.
In light-dependent reactions, the energy from sunlight is absorbed by
chlorophyll and converted into chemical energy in the form of electron carrier
molecules like ATP and NADPH.
In light-independent reactions (the Calvin cycle), carbohydrate molecules are
assembled from carbon dioxide using the chemical energy harvested during the
light-dependent reactions.
the answer you are looking for is C.