Chemistry, 28.11.2019 03:31 7431335

Describe and explain how the surface of the early earth and its atmosphere have
changed to form the surface of the earth and its atmosphere today.

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Answer from: jamie316

Everyone of us knows that there was an Intense Volcanic activity for the first billion year of Earth. Due to the circumstances, the amount of gases in our atmosphere was very unsupportable for existence of life(Very similar like the atmosphere of Mars & Venus of today).

Amount of Carbon dioxide was most abundant whereas oxygen was very little. Then, the changes which affect the proportion of gases were:

1) For Increasing Oxygen. - The only and most important source of increasing oxygen was the "Photosynthesis by Plants".

2) For decreasing Carbon dioxide. - (i) Absorbed by plants in order to do the process of photosynthesis.

(ii) Most of the CO2 dissolved in Oceans and many locked in sedimentary rocks, such as limestone, and in fossil fuels.

In that way, Our Atmosphere evolved,and now we're able to survive (If we care about our environment)

Hope this helps!

Answer from: Quest

The correct answer is a

Answer from: Quest

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).

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Describe and explain how the surface of the early earth and its atmosphere have
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