Answer:k
Explanation:
Atomic theory would be the theory or explanation of the function of atoms and their relationship with each other.
Number one is physical change the other one is chemical change
I think it's A but it might be different from your school and mine
Mg is magnesium. NO3 is nitrate. This gives you magnesium nitrate as an answer.
Answer:
a,d,e
Explanation:
its a,d, and e because clean air keeps us alive and other organisms need it to stay alive
