if we electrolyzed water then oxygen and hydrogen are products
D) Ion an electron is what is lost or gained, a neutron is a subatomic particle, same as a proton
Answer:
Explanation:
Secondary energy resources are those which do not occur naturally but which are obtained from one or more of the primary energy resources. Example: Petrol or gasoline, electrical energy from coal burning, hydrogen obtained by electrolysis of water etc. Non-commercial source of energy: Firewood, cow dung , and vegetable wastes.
The definition of vestigial structures is structures that appear to have lost their necessity throughout evolution so the answer would be true.
