A container weighs more after air is put in,_____proves that air has weight. 
#73698
A
as
B
it
C
that
D
which 
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Living things are dying out quickly. Let’s ask ____ destroying them in the past years.
#73211
A
what part people have been playing
B
people have played in
C
what part people have played in
D
people have been playing what part