Beef and other animal proteins generally have no carbohydrates.
beef
Of the listed items, vegetables would have the most carbohydrates with some veggies (like peas) having more than others (like spinach).
The most abundant source would be in glacial form as frozen water, although the most abundant and accessible source is groundwater.
Generally, the carbohydrates.
Coal is the most abundant in the USA
carbon, hydrogen and oxygen
Protein, carbohydrates and lipids
fiber
Starch
The sun
Solar.
Carbohydrates are the most readily available source of energy. Carbohydrates are essential to one's diet and are found in many types of food.