Answer:
uh well i can guess for you because i think i know,
1. physical change
2. water if heated up can change into a gas.
3.yeah
4.because the two hydrogen or whatever mixed with the one oxygen or whatever created two whatever
im pretty big brain as you can tell.
Explanation:
The answer I came up with is Echinoderms and Chordates.
Happy studying!
Its either A or C but im sorry i dont know which one
The answer to ur question is a
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