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ExtremeBDS [4]
3 years ago
13

How long can a person live without food but with water?

Biology
2 answers:
Monica [59]3 years ago
8 0
It would be about 3ish weeks 

belka [17]3 years ago
4 0
For about three weeks
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What is the mechanism that causes the continents to move
dimulka [17.4K]

Answer:

It's All About the Plates

Heat from the Earth's interior causes this motion to happen via convection currents in the mantle. Over a period of millions of years, this slow motion caused the single supercontinent to split into the seven continents you see today

3 0
3 years ago
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In the body of a human or other complex organism, a group of similar cells performing similar functions is called a/an
Kisachek [45]
<span>B.) Tissue.

Similar groups of function is called "Tissues"

Hope this helps!
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6 0
3 years ago
2. Beginning with the superior vena cava, trace the path followed by a red blood cell as it passes into and through the heart, t
Katen [24]

Answer:

BLOOD PATHWAY:

Body > superior and inferior vena cava > right atrium > tricuspid valve > right ventricle > pulmonary semilunar valve > pulmonary artery > lungs > pulmonary vien > left ventricle > bicuspid/mitral valve> left ventricle > Aortic semilunar valve > Aorta > Body

The pathway goes like this:

From the body (we don't say first because this is a cycle), unoxygenated blood collected goes to the heart via the <u>INFERIOR and SUPERIOR VENA CAVA</u> then it empties into the <u>RIGHT ATRIUM</u> from there it passess through a valve called <u>TRICUSPID</u> valve, which prevents backflow of blood to the right atrium. The blood goes to our first pumping chamber, <u>RIGHT VENTRICLE. </u> The right ventricle pumps the blood through the <u>PULMONARY SEMILUNAR VALVE</u> which leads to the <u>PULMONARY ARTERIES</u>, which happens to be the only arteries that carry unoxygenated blood. From there it goes to the lungs to pick up oxygen and rid itself of carbon dioxide. The blood then goes back into the heart via the <u>PULMONARY VEINS</u> and like the latter, they are the only veins that carry oxygenated blood.

The blood then goes back into the heart, emptying into the <u>LEFT ATRIUM. </u> From there it goes through the <u>BICUSPID VALVE or MITRAL VALVE</u> and to the last and thickest pumping chamber, the <u>LEFT VENTRICLE.</u> The left ventricle pumps the blood through the <u>AORTIC SEMILUNAR VALVE</u> which opens out to the <u>AORTA. </u>

And at last, it goes back to your body.

6 0
3 years ago
What are some solutions that can help to reduce noise pollution caused by things such as pile-driving? What are some of the draw
Vilka [71]

<u>Answer:</u>

A solution that can help to reduce noise pollution caused by things such as pile-driving is air-bubble curtain.

<u>Explanation:</u>

  • The noise pollution caused by things such as pile-driven into the soil is very high.
  • There are many solutions to reduce this noise pollution, air-bubble curtain is one of the useful and simplest solution to reduce noise pollution.
  • This solution is based on dynamic sub-structuring technique and modal decomposition method.
  • The major drawback of this solution is sound absorption becomes critical, when this method is employed in smaller piles it is because of the radiated acoustic energy is concentrated at higher frequencies than the resonance frequency of the air bubble.
5 0
3 years ago
Place the following generation of action potential steps in order:
kramer

Answer: 6) sodium channel activation occurs.

4)a graded depolarization brings an area of excitable membrane to the threshold.

7) sodium ions enter the cell and further depolarization occurs.

1)sodium channels are inactivated.

2) voltage-regulated potassium channels open and potassium moves out of the cell, initiating repolarization.

3) sodium channels regain their normal properties.

5) a temporary hyperpolarization occurs

Explanation:

action potential occurs when the differences in the concentrations of ions on opposite sides of a cellular membrane lead to a voltage of a specific cell location rapidly rises and falls.

The steps involved in this generation are;

First of all the sodium-gated channel activation occurs due to inflow of Na, this is called depolarization. A graded depolarization brings an area of excitable membrane to the threshold. More sodium ions enter the cell and further depolarization occurs. After which the sodium channels are inactivated due to the opening of voltage-regulated potassium channels and potassium moves out of the cell, returning it to it initial resting phase initiating repolarization. sodium channels regain their normal properties. a temporary hyperpolarization occurs which is a transient negative shift after an action potential occurs.

4 0
3 years ago
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