With many fossil fuels, such as coal, they contain some form of carbon, and when the fossil fuels are burned, they combine with oxygen to form CO2 (carbon dioxide) which is then released into the atmosphere.
Uracil is the different base that's found in RNA. Ribose is the 5 carbon sugar.
so your answer to this is ribose.
Answer:
because they were extremely un-reactive. Being inert, they were difficult to isolate via chemical reactions, thus difficult to distinguish as separate elements
Explanation:
<span>The California high-speed rail is such a groundbreaking effort because it helps with the environment and makes it cleaner. </span>
