History of Life on Earth

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Introduction to the Origin of Life

Tip: This isn't the place to ask a question because the teacher can't reply.

Key Questions

  • They help in that they show the transition of life through the ages.

    For example, they can show several ancestral species from which our present day species could have possibly descended. Also, they could also show physical features that present day animals also have.

    Of course, once you get into that there is a ton of controversy you will face, but for your average high school Biology course, what I said above is good to know.

    Hope that helped :)

  • Answer:

    This is can be a rather complex question but, I'll try to explain it as simply as I can below.


    To understand the history of the life here is to better understand the world we live in. Let me break it down.

    Lets look at the bacterial level. When scientists and researchers study bacteria to create medicines to help prevent disease and sickness, they have to look at the history of the life of the bacteria to see how long it takes to adapt to this or that. When they do this it helps them to better understand how the bacteria works and how to formulate a cure for it or a preventive measure.

    Understanding the history of most other living things on Earth can help us to better prevent further extinction of species and, for some that are on the verge of it, to help them rebound.

    As for humanity, a lot of it is to better understand our ancestors, to understand how we became who we are today. Sometimes it's an extremely educational and fascinating trip through the history of life on this planet. How did it survive through the harshest of environments. How did this species survive when all these perished. How did this species thrive in this environment when nothing else can even survive there.

    There are more reasons but this should give you a general idea of it.

  • Answer:

    The horse sequence of fossils is one of the most famous examples related to the history of life on earth.


    The horse fossil sequence shows how descent with modification might work.

    The fossils thought to be the earliest horses are very small and had three toes on the front and four toes on the back.

    The next fossils in the sequence are larger and have only three toes on the front and on the back. These ancestors of the modern horse could run faster than than the earlier horses.

    The next fossils have three toes on the front and back but two of the toes were short and were not touching the ground when the horse was running allowing the horse to run faster.

    The Modern horse is much larger and has only 1 toe both front and back allowing the horse to run very fast.

    By losing genetic information and becoming simpler the horse has been able to adapt to the environment and survive better.


  • Double-check the answer
    David Drayer answered · 1 year ago