Lipids would be the answer that you are looking for. When talking food energy it's best to speak in terms of calories. Therefore, lipids or fats offer the greatest amount of heat or energy.
<span>Nitrogen fixation
This process creates organic compounds, including ammonium, that contribute to the growth of a plant in much the way fertilizer does. Many plants have evolved to facilitate nitrogen fixing bacteria in their roots as to promote production of these organic compounds when the soil quality is poor or lacking in these bacteria.</span>
In each cell, through a process of gene expression, DNA is transcripted into mRNA which are templates used to create different proteins resulting in different functions in your body.
Answer:
The sun is the start of the water cycle
Explanation:
Water can not evaporate without the sun.