Addition, you added an extra T between the first A and C
ANSWER:
Index Fossils can be used to identify a specific period of time
It is water soil and temperature
They help because if you can adapt to things a camouflage evolution will be eaiser.
In plants carbon dioxide is reduced into simple carbohydrates (e.g. glucose) with energy absorbed from the sun within the chloroplast.
This is also known as photosynthesis.
Hope this helps!