Answer: They all do not have bones
Explanation:
The suffix in- means no, and vertebrate is a backbone so, the have no backbone.
I say about 40 percent cause say something like this ..
20% of small species of fish
20% of big species of fish
to be equal
20% are bigger
20% are smaller
hoped this helped ! <u />
<em>~</em><u><em>Frozen 2</em></u>
Because their foots is shaped like a spade
The amount of sediments the water can carry reduces and the most of the sediments settle