Factors that influence the reaction rates of chemical reactions include theconcentration<span> of reactants, </span>temperature<span>, the physical state of reactants and their dispersion, the solvent, and the presence of a catalyst</span>
I think it is B I had done these.
<span>Kidneys
When you digest a protein, the body breaks down the protein into amino acids which the body then uses to build new proteins. But if there is an excess of amino acids, the body isn't capable of storing those excess amino acids for future use. So the body breaks down the amino acids into glucose, ketones, hydrocarbons and nitrogenous waste. The nitrogenous wastes are then converted to urea by the liver and the urea is extracted from the blood stream by the kidneys and expelled from the body.</span>
That would be a sunspot, I believe.
Hope it helps!
