Because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.
I think none of the above...
Answer:
Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.
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Answer:
marine animals die and sink to the bottom and turn into fossil fuels. also through cellular respiration as we turn food and oxygen into usable energy for us and as a waste product we create carbon dioxide in the form of "water". (steam)
Explanation:
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