The whale's flipper and tail flukes and fish fins are analogous structure as they have different structural formation but they perform the same function.
Flipper and tails are locomotory organs in the whale and helps the whale in propelling similarly fins in the fish assist the fish in swimming. Both the strcutures have evolved differently and are made of different materials.
This is incorrect. Joints' movement is based on body position and on the role they have in the body.
To calculate the population density, you will divide the population by the size of the area. Hope I helped!
Answer c
Because the lowest one is at the bottom near 5 and the top one is on 25m and for it to be at 11m will be the wrong answer.
