Is it first?
Explanation:
Darwin first major break through was finding natural selection by using the pea pod method and noticing how some were yellow and some were green with different textures.
Energy is required for the normal functioning of the organs in the body<span>. Many tissues can also use fat or protein as an energy source but others, such as the brain and red blood cells, can only use </span>glucose<span>. </span>Glucose<span> is stored in the </span>body<span> as glycogen. The liver is an important storage site for glycogen.</span>
There are around 350,000-600,000
See attached image for most common formula of sulfuric acid.