Mutation would be the best answer.
Answer:
Because they have the same function to swim with, but have different structures and made of different material.
Explanation:
Answer:
In plant cell there present an important organelle, chloroplast that converts sunlight energy into energy during light and dark reaction.
The central nervous system of the frog is different from that of humans; if the optic nerve of a frog is cut, the animal will be able to see again within weeks but the same damage in humans would cause permanent blindness :).
A seismometer is used to measure the motion in the ground caused by earthquakes, volcanoes, or explosives.
