Life on Earth - Past, present and future - The exam papers.
TED Talk Subtitles and Transcript: Rich scientific evidence comes from the history of life on Earth -- we just have to ask the right questions to find it. Whether it's figuring out the cause of the dodo bird's extinction or the bite force of a Tyrannosaurus rex, paleontologist Michael Benton shares some offbeat quandaries from the past, present and future.
The earth came into existence between 5000 to 6000 million years ago from condensed form of a cloud of gases. By studying the hot, luminous gases of the sun, we find that sun is made of the same basic elements that are found by chemical analysis of earth’s material.
Since we haven’t found any evidence of life in the universe besides earth, we cannot make any conclusion as to whether or not we will find similar life form elsewhere in the universe. The Life as we know is unique and complex, yet it evolved early on earth. Life on earth evolved as early as 3.4 billion years ago.
The discovery that life on Earth can survive under such harsh conditions has broadened the understanding scientists have of where they might find life off Earth. “By learning more about the boundaries of life here on Earth, we can improve our definition of what life is and what it can tolerate,” says Jamie Foster.
Life on Earth Essay Example. Pages: 8 (2101 words) Published: March 27, 2008. Life on earth A. Procaryotic Organisms 1. The prokaryotic cell, unlike the eukaryotic cell, is able to survive in an oxygen-deprived, mineral-deprived and vitamin-deprived environment. The normal cells in our body, the eukaryotic cells need oxygen, vitamins and.
The future of the Earth will depend on many things, including increases in the brightness of the Sun, loss of heat energy from the Earth's core and change of the planet's orbit by the other things in the Solar System.The Milankovitch theory says the planet will continue to go into glaciation cycles because of the planet's difference in orbit from a perfect circle, the axis of the planet.
The biological and geological future of Earth can be extrapolated based upon the estimated effects of several long-term influences. These include the chemistry at Earth's surface, the rate of cooling of the planet's interior, the gravitational interactions with other objects in the Solar System, and a steady increase in the Sun's luminosity.An uncertain factor in this extrapolation is the.