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DerKrebs [107]
3 years ago
6

What is the percentage of oxygen in air ASAP...​

Chemistry
1 answer:
abruzzese [7]3 years ago
3 0

Explanation:

21 % of oxygen is present in air .

hope it is helpful to you

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Which line of evidence has been traditionally accepted as conclusive proof of evolution? the presumed age of the Earth the fossi
Nataly_w [17]

The most generally accepted form of conclusive evidence for the theory of Evolution is the fossil record.

<h3>What is the theory of Evolution?</h3>
  • The theory of evolution was proposed by Charles Darwin.
  • It states that as time passes, organisms evolve to better adapt to their environments.
  • This is closely related to natural selection, which is considered a <em><u>driving force of </u></em><em><u>evolution</u></em><em><u>. </u></em>

<h3>How the fossil record supports this theory</h3>
  • The fossil record provides essential data to support this claim.
  • The data comes in the form of the comparison between fossils of two closely related organisms, separated by a matter of generations, that <em><u>present changes in the genetic code that made them more apt for survival.</u></em>

Therefore, we can confirm that the most generally accepted form of conclusive evidence for evolution is the presence of <u>fossils </u><u>that show the genetic correlation between two organisms and the progression of </u><u>evolution </u><u>between them. </u>

To learn more about evolution visit:

brainly.com/question/2725702?referrer=searchResults

5 0
3 years ago
Cuando viajo, me gusta comprar recuerdos.
kaheart [24]

Answer:

to buy souvenirs

give me big brain

Explanation:

7 0
2 years ago
Which two terms relate and why? Energy level, neutron, spectral line
andre [41]

Energy level and spectral line

Explanation:

The energy levels and their spectral lines are related.

Based on the Bohr's model of the atom, he suggested that electrons occupy specific spherical orbits.

These orbits are called energy levels around the nucleus.

The spectral lines are the different colors emitted by atoms when they absorb or lose energy.

  • Electrons can transition between different energy levels when they acquire enough energy that corresponds to that of the energy level
  • By doing so, they emit energy in the process and this is seen as visible spectral lines.
  • Spectral lines are usually studies in order to gain more information about the properties of atoms.

learn more:

Spectral lines brainly.com/question/1857156

#learnwithBrainly

6 0
4 years ago
Energy can cause matter to _ or _<br>​
Firdavs [7]
Technically the answer would be a
7 0
3 years ago
An atomic scientist was studying an atom which through experimentation found that the total negative charge of the area surround
chubhunter [2.5K]

Answer:

The answer is B

Explanation:

The area surrounding the nucleus is called the electron cloud which holds the electrons, so with the power of deduction its B. 0-0

6 0
4 years ago
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