You should consider how much you want to make, so make a budget. See if the equipment is good quality.
The answer is “ COVALENT BOND”
Because they are the same chemical reaction but reversed. Cellular respiration takes glucose (from nutrient/food) and oxygen (from atmosphere) in order to make CO2 (think about exhaling) and H20 (water).
(I don't remember this clearly so it may be wrong, i'll look into it and come back!)
Did you mean is or is this a true false
