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Viktor [21]
2 years ago
15

Which of these is an example of an autoimmune disease

Biology
2 answers:
Vlad [161]2 years ago
6 0

Answer:

D) rheumatiod arthistis

Explanation:

It's right, I took the usatestprep quiz just now

Firlakuza [10]2 years ago
4 0
Rheumatoid arthritis is an example of an autoimmune disease
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sleet_krkn [62]
The answer is c :))))))
8 0
3 years ago
Root vegetables, such as carrots, are classified as what type of root system?
erica [24]

Answer:

They are called tubors.

4 0
3 years ago
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Explain how the terms oxidation and reduction apply even when there is only a partial shift of electrons between atoms linked by
aliina [53]

Explanation:

In a covalent bond, there is sharing of the donated electron by two atomic species having very small electronegative differences between them.

Oxidation is the loss of electrons by a specie and it usually lead to an increase in oxidation number.

Reduction is the gain of electrons by a specie. It leads to a lower oxidation number.

Since there is no actual loss of gain of electrons in a covalent body, the electronegativiy is at work.

Electronegativity is the ability of a specie to draw the shared electrons more to itself in a covalent bond.

  • Between two atoms bonded covalently, the more electronegative specie draws the electrons closer.
  • This leaves a partial negative charge on it.
  • The other electron then becomes partially positively charged.
  • We can then say, the more electronegative specie undergoes reduction.
  • The less electronegative one undergoes oxidation.

learn more:

Covalent bond brainly.com/question/3064597

Oxidation and reduction brainly.com/question/2278247

#learnwithBrainly

5 0
3 years ago
What does these characteristics describe: highly effective predator defenses, resilient to as many existing predators-long life
GREYUIT [131]

Answer:

pretty sure it's d. invasive species

Explanation:

the reason a species is called invasive is if it is incredibly difficult to get rid of and the population is growing out of control quickly. the characteristics that was given were likewise to the behavioral problems of an invasive species.

4 0
3 years ago
!!!!!!!!!!!!H-E-L-P!!!!!!!!!! How do index fossils help scientists establish how old rocks and other fossils are? In your answer
Artist 52 [7]

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.

6 0
2 years ago
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