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joja [24]
2 years ago
12

!!!!!!!!!!!!H-E-L-P!!!!!!!!!! How do index fossils help scientists establish how old rocks and other fossils are? In your answer

, include fossils in the same layer of rock, in a lower layer of rock, and in a higher layer of rock compared to an index fossil.
Biology
1 answer:
Artist 52 [7]2 years ago
6 0

Answer:

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.

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The flowchart below shows the major steps in a system that builds mp3 players.
ValentinkaMS [17]

Answer:

A . II and IV only.

Explanation:

  • Process is defined as the series of steps that are followed to achieve certain goal.
  • In the flow chart I, III and V show raw material, the parts and Mp3 player. respectively.
  • None of these involves steps or method.
  • Step II shows Production. It involves methods and steps that convert the raw material in to product. Thus, it is a process.
  • Step IV show assembly. Assembling also involves series of steps and method that combine the part to make the Mp3 player. Thus it is also a process.
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3 years ago
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Complete the sentences. Each term may be used more than once.
11Alexandr11 [23.1K]

Answer:

The correct answer is -

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Explanation:

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If DNA is twisted in the right-handed direction, it becomes overwound. Overwinding results in positive supercoiling takes place. If DNA is twisted in the left handd direction, it becomes underwound. Underwinding results in negative supercoiling.

f. One effect  negative supercoiling in bacterial chromosomes is to promote separation of the two strands of DNA in the double helix

8 0
2 years ago
How big is the largest known asteroid? about 10,000 kilometers in diameter about 1,000 kilometers in diameter about 100 kilomete
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Hurrrryyyy!!!<br> Describe what a moraine is made of and explain how this glacier feature forms.
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The parasympathetic division of the somatic nervous system is active when the body is at rest.
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