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kvv77 [185]
3 years ago
10

33. Scientists speculate that the first mammals related to the primates appeared during the Paleocene about years ago. A 50.000

B 65 million C 5 million D 200 million while Old World Monkeys do not possess this
Geography
1 answer:
Luba_88 [7]3 years ago
4 0

Answer:

<u> B. 65 million</u>

Explanation:

  • Primates are remarkably the first mammals so when the earth formed about 4.5 billion years ago and the first life on earth dates to 3.5 billion years the primates did not appear before the 50-55 years ago.
  • Thus by the end of Mesozoic Era i.e about 65.5 million years ago, the primate started to have originated over the earth's surface. At that time the North American continent was still connected to the European landmass and India then was not a part of Asia and most of the landmasses had warm tropical or subtropical climates.
  • The body size of the early monkeys and apes that took the advantages of vast expanses of land and where the biggest animal to revolve around the 39-40 million years and flourished in the Oligocene Epoch.
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Answer:

time taken for 25% Phlebotinum and  75% Dilithium is 168 million years

Explanation:

radioactive isotope of Phlebotinum decays into Dilithium.

time taken to half life takes = 42 million years

half life means that the Phlebotinum is 50% and  Dilithium is also 50%

and now it is given that  Phlebotinum is 25% and Dilithium is 75%

hence this condition will come after two half lives.

for one half life it takes  42 million years

and for second half life time becomes 4 times of first half life

time for 25% Phlebotinum and  75% Dilithium is  = 4 × 42

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hence time taken for 25% Phlebotinum and  75% Dilithium is 168 million years

                                 

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What can scientists learn from magnetic striping patterns? Select the three correct answers.(2 points)
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Hello. This question is incomplete. The full question is:

What can scientists learn from magnetic striping patterns? Select the three correct answers.

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