Answer:
this is because Steel is more difficult to magnetise and demagnetise but an iron core makes a temporary electromagnet because its lose its magnetism when the switch is open and and steel core is used to make a permanent electromagnet
Answer:
3rd
Explanation:
Cellular respiration occurs only in animals
I'd say A: tidal waves. B, C, and D don't really seem to fit for me.
Environment. None of the others make any sense. :)
