Answer:
A
Explanation:
Well, the human skeletal system produce red blood cells into and for the body.
True, Petroleum is used to make synthetic plastics and numerous petrochemical.
Answer:
Groups
Explanation:
Elements with the same number of valence electrons are found in the same column(group) of the Periodic Table.
If the glowing splint bursts into flames during the decomposition of H2O2, it will indicate at gas which will be produced. And that gas that is produced because of the glowing splint bursts is the type of gas called oxygen.
