I'm pretty sure it's photosynthesis, as photosynthesis actually takes carbon from the atmosphere to make glucose.
Biodegradability and what chemicals are produced when it is broken down.
These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full
http://peter-mulroy.squarespace.com/correlating-rock-layers/
Ultraviolet radiation may increase when there is an increase in sunspots
<span>The 1-kg ball accelerates twice as much as the 2-kg ball.</span>
