8500
39
The elements carbon, oxygen, hydrogen and nitrogen combined make up
about 96% o...
![subject](/tpl/images/cats/biologiya.png)
8500
39
The elements carbon, oxygen, hydrogen and nitrogen combined make up
about 96% of our bodies (carbon is about 18%). Carbon is necessary for life
because it is a(n)
uncommon
element in all
living things.
element found
only in the
atmosphere
onder
is found mostly in
dead things
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