Can be methan.
Due to the decomposing process, methan is released into the air and it can be collected in some special tanks
Celery stalks that are immersed in fresh water for several hours become stiff and hard. :333333
The potential energy in food is what we call a Calorie, which (note the capitalization) is actually a kiloCalorie (1000 calories). Just pick any food high in calories; fats and oils are very calorie dense.
They include the kidneys, large intestine, liver, skin, andlungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes theureters, bladder, and urethra.
Answer:
A is true..... by law of conservation of energy
