Answer:
yes
Explanation:
Coal is an important source of energy in the United States, and the Nation's reliance on this fossil fuel for electricity generation is growing. The combustion of coal, however, adds a significant amount of carbon dioxide to the atmosphere per unit of heat energy, more than does the combustion of other fossil fuels
No they cant be mechanical because then something would have to generate their rays through the inventing of a machine.
Genes" is the one among the following choices given in the question that we call these units of hereditary information today. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
I think the answer is 1. after
The answer to your question is B.