Comments by "r f" (@rf-bh3fh) on "Discovery UK" channel.

  1. Multifactorial reasons for development of species. Extinction level events remove sources of energy to develop and maintain a species. Plants the real place life starts. Animals in a way are parasites in the living ecosystem. When events happen to take out plants animals die. Then when the energy source is slow to recover the new course of development changes. There are other reasons as well animals are dependent on mitochondrial ATP to provide energy for biological processes. There are many types of mitochondrion! We will never know what they looked like or functioned in these creatures. Life span on these beast were short. Just imagine the ROS of There energy production.
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