Answer:
Because, Air (or any gas) takes up space in water, just like solids. Air (or any gas) is less dense than water, so gas bubbles float to the top of water.
Answer:
I think it is behavioral adaptation
(If I did pick all of the above it still will be behavioral adaptation because that is all that is above the second choice*nervous laugh*)
Not the Answer:
The answer was not the brand of the shovel and where it is sold.
Explanation:
That was not the answer. The only reason I say this is so that others don't make the same mistake.
The answer (I think) would be A?
I think its carbondioxide