Answer:
b I think but I am not sure but have a good day
Convection Currents occur in the <u><em>mantle</em></u><u><em /></u><em /> layer of the Earth. If that is not right try <u><em>Asthenosphere.
</em></u><em></em>If you need more help I will be glad to help!:D
*~"AB84"~*
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Answer:
huh? b gnifdskjlvnfsvdlnffendjlnmssf
Explanation:
Elements cannot be broken down to similar substances.
Hope this Helps! (:
Ash can be harmful to an environment. It mostly depends on how much ash there is though. If a volcano erupted such as Mt. St. Helen's then yes that can harm an environment. Ash can cover the sky and block out the sun for days before disappearing and that will affect the life of plants