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nikitadnepr [17]
3 years ago
15

Which part of the body do you use to walk?

Biology
2 answers:
True [87]3 years ago
8 0

Good morning


The answer is : Your feet

Pani-rosa [81]3 years ago
8 0
You walk on your feet which are connected to your legs by your ankles. The legs are connected to the pelvis, all this is the lower have of your body and all are needed for you to walk.
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yanalaym [24]

Answer:

Environmental factors can alter gene expression, cell signalling and cell differentiation.

Explanation:

  • Environmental factors can change, stop or disrupt the process of cell signalling and gene expression in organisms.
  • The environmental factors are drugs, chemicals, temperature, etc.
  • With the effect of environmental factors, the organism will try to adapt to the environment by changing the internal process.
  • In case of adaptation, some organism may survive to the changing environment but there is a risk of exhibiting defects and in some case, the result can be death.

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3 years ago
Gas makes things buoyant, why ? And what are ways that this could be useful?
ryzh [129]

Answer:

Gas makes things buoyant by making the volume of an object lighter than the surrounding fluid it is trying to displace.

Gas Buoyancy is useful in the following ways;

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Explanation:

Buoyancy is the tendency of an object to float in a fluid such as air or water. It is a phenomenon that was theorized by the mathematician, Archimedes known as the Archimedes Principle.

It states that the upward buoyant force that is exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces.

The principle explains the reason why objects float and fly.

So, when an object is immersed in a fluid, it can float due to the upward force exerted by the fluid on the object. But for this to happen, the object has to weigh less than the fluid it is displacing.

This is where the use of a gas comes into play.

Because the object may be heavier than the surrounding fluid it is trying to displace, it is filled with a large amount of gas (usually hydrogen and/or helium) which is lighter. This makes the volume of the gas and the object put together lighter than that of the surrounding air.

This is what causes objects to float or fly

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