Answer:
B.Self powered
Explanation:
They move by themselves.Hope this answer helps you ;)
Cat urine. May sound weird, may get it wrong, but it's true. Your teacher'll freak out.
Mass and energy can not be created or destroyed, they may be able to just be converted, and neither one seems without the opposite. For this reason in closed systems, both mass and energy are conserved individually. " I hope this helps "
Answer: both are solid at room temperture
Explanation:
