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Nuetrik [128]
3 years ago
10

Blackheads differ from whiteheads because whiteheads are covered by skin, whereas blackheads are open to the air. What causes th

e dark coloration
Biology
1 answer:
vfiekz [6]3 years ago
3 0

Answer:

Lipids within the sebum react with air, resulting in chemical oxidation and the formation of the black color.

Explanation:

This is the answer. I hope it helps you out.

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In class, your professor shows you the skulls of three mammals. In one, the eye would be fully enclosed by bone. In the second,
zheka24 [161]

Answer:

C

Explanation:

It is more probable that the third one has a more developed sense of the vision with a large eye, and its movements. Also with a opened back to receive its nutrition and optic nerve.

Sources:

Zihlman, Adrienne. (2006). «The Ape in the Tree». International Journal of Primatology (en inglés) 27 (4): 1227-1228

8 0
4 years ago
Why did Charles Darwin predict that tetrapods evolved from fish?
qwelly [4]

Answer:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord. fish lived before tetrapods because their fossils are in rocks over 500 million years old.

Explanation:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord

8 0
2 years ago
How many ATP would ultimately be generated from the complete oxidation of an 18 carbon stearoyl-CoA?
Zielflug [23.3K]

Answer:

90 Atp

Explanation:

Stearyol co A is an enzyme that is responsible for fatty acid metabolism. This take place in the presence of oxygen.

Complete oxidation of stearyol co A break into 9 acetyl co A which through kreb cycle and electron transport chain produced 90 ATP.

5 0
4 years ago
Does graphite have a crystal pattern
Vikentia [17]

Yes

Explanation:

Graphite is one of the two allotropes of carbon. It is crystalline and has well ordered crystal patterns.

  • Graphite is made up of layers arranged in a hexagonal structure weakly bonded by van der waals forces.
  • Graphite structure is made up of hexagonal planes of carbon weakly bonded to one another.
  • This structure makes graphite soft and slippery and makes them applicable as lubricants.
  • The other crystalline type of carbon is diamond.
  • Diamond has close-packed crystal structure responsible for its extreme hardness.
  • The arrangement of these atoms permeates through the structure.

learn more:

Diamond brainly.com/question/10515084

#learnwithBrainly

3 0
3 years ago
Organs repair themselves through a process of?
Anastaziya [24]
The process is Mitosis
4 0
3 years ago
Read 2 more answers
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