Answer:
C. The upper part of the water column represents areas of high sunlight penetration.
Explanation:
I just took the test and checked my answers.
Phosphate Backbone is teh dna sugar phosphate bases connect with each other.
Answer:
Robinson explains how she uses layers in fossilized corals to understand what the environment was like overtime. By finding out what mainly makes up each layer and finding out roughly how old each layer is, she can begin to understand what the chemical composition and climate was like when the coral pieces were alive
Answer::::::::::::::::::::C
Answer:
25.2
Explanation:
you add app all the numbers for the 1 column and divide by 7 then you do the same for the other column then subtract the totals from both to get the answer
