Answer:
We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.
Explanation:
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Answer: B.
Explanation:
Arrows point to penguin, fish, krill, and other birds.
Mollusks
Mollusks is the group of invertebrates that made up the majority of the Marine species. Their bodies tend to not divided into segments like other organisms.
Answer:
True
Explanation:
Because of Pangea, they show evidence of fossils deep underground in different continents
The correct answer is D.
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