The "sub shells" are the orientations and shapes for your orbitals, going in order by Shells are a collection of subshells with the same principle quantum number, and subshells are a collection of orbitals with the same principle quantum number and angular momentum quantum number. Hope this helps :)
Result rocks poor what heat lave transmit
Running cars on electricity would conserve gasoline because electric cars do not use the same resources.
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Answer:
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
Cutting of Nails is a Physical Change since no new substance is formed.
Don't confuse it with Reversible and Irreversible Changes