Answer: A habitat is the answer... Hope this helps!
Answer:
Nitrogen
Explanation:element found in all organic compounds carbon
element found in proteins but not carbohydrates or lipids nitrogen
three parts of a nucleotide phosphate, sugar, base
element found in nucleic acids, but not proteins, carbs, or lipids phosphorus
I believe it's "pollen".
When the pollen grains are washed down into lakes/rivers, scientists can take a sample of the sediment layers and see what plants were growing at that time. They can then make inferences about the climate and how that affected the plants growing there.
Hope this helps!
I believe the answer is frequency
