Answer:
Nitrogen is essential for all living things because it is a major part of amino acids, which are the building blocks of proteins and of nucleic acids such as DNA, which transfers genetic information to subsequent generations of organisms.
<span>The sunspots are eruptions of heat and light energy emitting from the surface of the sun. These can increase our energy absorption many times above normal. Especially if it is pointed directly at the earth. These have been known to disrupt several bands in the radio spectrum and have knocked out communications of satellites. Naturally all this energy would have a great effect on our earth in many ways, climate included.</span>
Oxygen because lipids are fats that need oxygen to use long term energy
Cast- solid copy
Mold- hollow form
Carbon film- details left after an organism decays
Trace fossil-record of an organisms activity
Petrified fossils- living things turned into rock