It doesn't have a 3 dimensional pattern
Answer:
b. I've seen a question like this before lol
Explanation:
When magnesium metal burns is heated i the air it forms magnesium oxide.The balanced chemical reaction is given as:

2 moles of magnesium metal when reacts with 1 moles of oxygen it gives 2 moles of magnesium oxide which is white in color.
Some times along with formation of magnesium oxide small amount of magnesium nitride also produced due to which magnesium oxide appears grey in color .The balanced chemical reaction is given as:

3 moles of magnesium combines with 1 mol of nitrogen gas to to give 1 mol of magnesium nitride.
The correct answer is aerobic cellular respiration. This process uses glucose and oxygen as reactants producing six molecules carbon dioxide, 6 molecules water and 30 molecules of ATP which is used directly to produce energy.