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Lynna [10]
3 years ago
13

What are examples of the outer core?

Biology
1 answer:
Helen [10]3 years ago
6 0
The outer core of the Earth is a fluid layer about 2,300 km (1,400 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface. This should help
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Which of the following is TRUE about this reaction?
hoa [83]

The right answer is C

This process is called anaerobic respiration. It doesn't need dioxygen to occur (it can happen with or without O2).

Anaerobic respiration is a mechanism in which electrons pass through a chain of transporters whose final acceptor is a mineral substance other than oxygen, unlike aerobic respiration where the final acceptor is dioxygen. The final acceptor may be the nitrate ion (as in the case of Pseudomonas), carbon dioxyde or the sulfate ion.

Some bacteria (Pseudomonas) are able, anaerobically, to reduce nitrates to nitrites and then, depending on the case, to dinitrogen (with the enzyme Nitrate reductase A).

NO3- ==> NO2- ==> N2.

5 0
3 years ago
Which of the following ideas is supported by Darwin's observation of local variation among tortoises in the Galapagos Islands A)
Hoochie [10]

Adaptation is supported by Darwin's observation of local variation among tortoises in the Galapagos Islands.

 

<span>In biology, an </span>adaptation, also called an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection. Adaptation<span> refers to both the current state of being </span>adapted<span> and to the dynamic evolutionary process that leads to the </span>adaptation.

 

The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

4 0
3 years ago
Which statement about the immune system is false?
skelet666 [1.2K]
The correct option is D. This is because, mucus, inflammation and fever perform different functions in the immune system.The mucus membrane produces mucus which traps microbes. Inflammation refers to a localized tissue response which occurs when a tissue is damaged. Fever inhibits bacterial growth and speed up the rate of healing of a damaged tissue.
5 0
3 years ago
What would be the magnification of a specimen viewed with a compound light microscope that has an objective power of 40x and an
likoan [24]
400x because you have to multiply that 40 by that 10
5 0
3 years ago
Read 2 more answers
Most of the oxygen transported by the blood is___________.
Pie

Answer:

c. Bound to hemoglobin.

Explanation:

The oxygen is relatively insoluble in plasma. At normal atmospheric pressure, only 0,3% of oxygen dissolves. That why there are respiratory pigments that <u>elevate almost 70 times</u><u> the capacity to transport O₂ of blood</u>. The most common respiratory pigments are hemoglobin (in all vertebrates and some invertebrates) and hemocyanin (in mollusks and arthropods).

8 0
3 years ago
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