I believe your answer would be Echinoderms and Chordates. I hope this helps!
<span>B.) Information on the distance from the ocean to the rivers that the salmon use. >? i think this would be it since they would not even be able to reach the area needed to breed >?</span>
The answer is a. to determine what sort of data table will be most useful.
Controlled experiment is used parallel with experiment in which some alteration of the subject is induced. This is because this way can be compared in treated and non-treated subject. When sort of data table is necessary, using the controlled experiment, it can be determined what sort of data table will be most <span>useful.</span>
Answer: The answer would be Substrates
I think its C. global warming
because the other one directly threats aquatic bio diversity while global warming doesn't just affect aquatic biodiversity