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sweet-ann [11.9K]
2 years ago
14

Essay importance of Human development​

Biology
1 answer:
Aloiza [94]2 years ago
7 0
Go to www.essaybot.com it creates an essay for you with whatever topic you need help in
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What are the two types of force in simple machine?​
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there are many..

Explanation:

wheel and axel are two type of forces in simple macine

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The total magnification of a specimen viewed under a compound light microscope is determined by
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The magnification power level of the microscope
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What conversion factor is needed to change from kilometers to meters
Vesna [10]

。☆✼★ ━━━━━━━━━━━━━━  ☾  

To convert from kilometers to meters, you would multiply by 1000

So, the conversion factor would be x 1000

This can also be written as x 10^3

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4 0
3 years ago
How does nerve impulses travel from one neuron to another?
olga2289 [7]

Answer:

(d) Electrical-->Chemical-->Electrical

Explanation:

A nerve impulse is the transmission of an electrical change along the neuron's membrane from the point at which it is stimulated (synapse). The normal direction of impulse in the body is from the cell body to the axon. This nerve impulse, or action potential, is a sudden and rapid change in the transmembrane potential difference.

Normally, the membrane of the neuron is polarized at rest, which means that the ionic constitution of the medium internal to the membrane is different from the external medium, which generates different electrical charges in one medium and the other, so this difference, ie , the potential during rest is negative (-70 mV). The action potential thus consists of a rapid reduction of membrane negativity to 0mV and inversion of this potential to about + 30mV, followed by a rapid return to values slightly more negative than the resting potential of -70mV.

Nervous impulse or action potential, therefore, is a phenomenon of an electrochemical nature and occurs due to changes in the permeability of the neuron membrane. These permeability modifications allow ions to pass across the membrane. Since ions are electrically charged particles, changes also occur in the electric field generated by these charges.

Thus, we can say that the correct answer to this question is: Electrical -> Chemistry -> Electrical

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3 years ago
"Exhaled air containing __________ bubbles into water and reacts with water to produce carbonic acid. This will cause the soluti
Lera25 [3.4K]

Answer: Exhaled air containing Carbon dioxide bubbles react with water to form carbonic acid . The solution turn acidic and turn from green to yellow.

Explanation:

Exhaled carbondioxide bubbles reacts with water to form carbonic acid, the solution will turn acidic. Carbonic acid is a weak acid that decrease pH. An indicator of it shows that the solution turns from green to yellow.

Co2+ H2O= H2Co3.

The solution then dissociate to give H ion and hydrogen carbonates ion.

4 0
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