Answer:
B
Explanation:
carbon 12 is most useful to humans
High tide is when the ocean rises
Gold is found in pure state in nature but not the iron because gold is un-reactive metal, so it does not react with other element in normal condition but iron is reactive metal so it reacts with atmospheric oxygen in presence of moist (water) to form oxide.
Explanation:
I hope it'll help you.
Answer:
One mole
Explanation:
It tells u the concentration
