Answer:
Ar
Explanation:
Argon isn't with the metals on the periodic table
Answer:
Undergo means to experience or take part in something.
Explanation:
If you undergo something, you are undertaking it.
Also see; undergo, undergoes, undergoing, undergone, underwent.
"During metamorphosis, an animal will undergo change."
Answer:
The first theories of matter were put forward by Empedocles in 450 BC, he proposed that all matter was composed of four elements - Earth, air, fire and water. Later, Leucippus and Democritus suggested matter was made up of tiny indestructible particles continuously moving in empty space.
Explanation:
Got it from google hope this help :))
