As a Marine Scientist, you want to find out if the length of the tail of fish is the same length. what tools will you use to do the measurement
(give illustration)?

Pinch the tail fin closed and measure to the tip to get the total length. The tail fin is the fin at the end of the fish's body. Place your index finger on one tip of the tail fin and your thumb on the other. Then, squeeze the two tips together so they form a single point.

Explanation:

answer; i believe the answer is hydraulic action;

c is the answer to this question. altitude affects the weather because air molecules evaporate.