Since its inception, the theory of evolution has been the subject of frequent debate. Those who oppose evolutionary theory often point to gaps in the fossil record in an attempt to discredit the theory. Which statement would be the best counterargument as to why the fossil record can be relied upon to
support evolution?
The fossil record provides evidence that extinct species only fossilized during certain geologic eras.
The fossil record provides evidence that extinct species are genetically identical to current species.
The fossil record provides evidence of many different types of organisms, since most species fossilize well.
The fossil record provides evidence of many transitional organisms that show relationships between species

There are lots of transitional organisms in the fossil record though it does take very specific and precise conditions for a fossil to be preserved, a deer that dies in a field will not end up in the fossil record so we are looking at a small sampling of the evidence (and a good thing too or there wouldn't be anywhere to walk with all the bones laying around)

Explanation:

Carbon dioxide and oxygen are differentially exchanged between the atmosphere and the oceans in the carbon cycle. An increase in atmospheric carbon dioxide also raises the carbon dioxide absorbed by the oceans. This increases the pH of the ocean waters which consequently affects the growth of phytoplankton. Low pH affects negatively the growth of phytoplankton. The clarity of the waters would, therefore, increase with pH due to low plankton growth.