The most logical answer that I can think from Darwin's Theory of Evolution is that that species had been isolated from other possible panthers to mate with. So after generations of that isolated group of panthers their offspring would eventually become increasingly similar.
Cell division starts with one parent cell and finishes with two cells. Each daughter cell has the same DNA as the parent cell
Answer:
solar radiation is the heat energy received from the sun into the solar system that also reaches the earth.
Polar regions receive the least amount of solar radiation, therefore, they have colder climates.
The equator receives the most amount of solar radiation, therefore, they have warmer to hot climates.
Explanation:
Rigid skeletons are formed from materials including chitin (in arthropods), calcium compounds such as calcium carbonate (in stony corals and mollusks) and silicate (for diatoms and radiolarians).