They seem to be complex they are rapid and tend to spread
For the first question, I would say a line graph. And the one about the human heart, I need some more information.
Answer:
Water
Explanation:
water molecule contains one oxygen covalently bound to two hydrogen atoms with no carbon present.
Answer:
i Had that answer before and I forgot the answer sorry
Answer:
A was the answer to mine but u didn't post your diagram so I don't know
Explanation:
