Question

Take
three
test-tubes.
Fill
3/4th
of
each
with
water.


Label
them
A,
B
and
C.
Keep
a
snail
in
test-tube
A,
a


water
plant
in
test-tube
B
and
in
C,
keep
snail
and

plant
both.
Which
test-tube
would
have
the
highest


concentration
ojhkhkj​

Answer 1

Answer:

Living organisms use oxygen and release CO2 during respiration.

Test tube A consists of snail which continuously uses the oxygen produced and releases carbon dioxide.

Hence, test tube A will have the highest concentration of carbon dioxide