Answer: Asexual reproduction
Asexual reproduction is a mode of reproduction in which a single parent is involved to produce the offsprings. This occurs in simple organisms. This does not requires formation of gametes like sexual reproduction. The offsprings are identical to the parent organism. Here, mother colony of protists, volvox gives birth to daughter as only single parent is involved it is a asexual mode of reproduction.
Answer: pressure changes
Valves of the heart open and close due to pressure changes
Explanation:
The veins are the blood vessels possessing valves. And because they carry blood away from the heart, the valves helps to prevent back flow of blood due to the low pressure of blood found in the veins.
Thus, Valves of the heart open and close due to pressure changes
According to Darwin related organisms have common ancestors. As adaptive characteristics become more widespread in a population through successive generations, the result is natural selection. Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. They serve as important evidence of evolution since they show that life on earth was once different from what exists on earth today.
Explanation:
its typically cold and frosty
Reptile scales! Or, more specifically, reptiles descended from dinosaurs.
