Yes.
and the adjective phrase in this is "of energy"
Living things use carbohydrates as their main source of energy.
carbohydrates are our main source of energy
Carbohydrates
Carbohydrates
Carbohydrates
carbohydrates
The main source of energy is from the sun.
In the human diet, the main source of energy is carbohydrates. In order to be used, carbohydrates are broken down into glucose that is used during respiration to produce energy.
Carbohydrates are a source of energy so we can move, work, exercise, and play.
Carbohydrates
carbohydrates
carbohydrates