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svp [43]
3 years ago
8

What is the only thing that can scratch corondum?​

Biology
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

The only thing that can scratch Corundum is diamond.

Explanation:

We refer to the Mohs Hardness Scale for the hardness levels. We can see that Corundum is a level 9 which is the second highest so at a level 10 we see diamond, therefore diamond is the only thing that can scratch Corundum.

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Anuta_ua [19.1K]

the answer to this question is c i hope this helped

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3 years ago
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Why do organisms have varying traits, like different colored eggs?
mylen [45]

the organisms have varying traits, like different colored eggs because of the natural selection.

<h3>What is the process of natural selection? </h3>

Natural selection is one of the main mechanisms of evolution. In a very simple way, we can say that natural selection is a process in which the fittest organisms are selected, survive in the environment, reproduce and pass their characteristics on to their descendants.

the color change of an egg occurs by natural selection and also by genetic variability. since the environment will select the best ones to survive and mutations will occur. Natural selection will forcefully change the environment causing only a few species to survive.

See more about natural selection at brainly.com/question/9830102

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2 years ago
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charle [14.2K]

Answer:

<h2>Holaaaa !!</h2>

Explanation:

  1. at equilibrium , half of the 'O' molecules will diffuse in Next chamber while half of the 'Dark O' molecules will diffuse in First chamber.
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  • 2 ∆ molecules can not move across the membrane due to its size.

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6 0
3 years ago
HELP ASAP
Gnom [1K]

Answer:

less than 1%

Explanation:

The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.

The earth is about 4.6 billion years and much of its history has been without the present of human activities.

  • Hominis were the first human to appear on the surface of the earth.
  • This was in the Miocene epoch which was about 6 million years ago.
  • Compared to the age of the earth, this time lapse is very small and not up to 1%.
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to regulate what comes in and leaves the cell

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