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The Comparative Abundance Of The Elements
Beginning of essay
- There are 92 naturally occurring elements, only 17 of them make up 99.5% of
the earth's crust (including oceans and atmosphere). - In living things (plants,
animals, people) the six most abundant elements are carbon, hydrogen, oxygen,
nitrogen, phosphorus and sulfur. - The universe is dominated ....
Middle of essay
....xides of metals, and as
silicates. Common soils and clays are silicates.
2. Living Things
In living things (plants, animals, people) the six most abundant elements
are carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur (known as CHONPS).
Most compounds in living matter are radically complex, each molecule could
contain hundreds or thousand's of atoms. Carbohydrates and fats are compounds
which contain carbon, hydrogen and oxygen only. Proteins are also compounds and
they contain n.... |
| Number of words: 474 |
Approximate pages: 2 |
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