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GaryK [48]
3 years ago
8

What two gases together make up 99% of Earth's atmosphere?

Biology
2 answers:
Soloha48 [4]3 years ago
5 0
The two gasses that make up 99% of the earth's atmosphere are nitrogen and oxygen. 
Hope that helped! =)
s344n2d4d5 [400]3 years ago
3 0
Nitrogen<span>, </span>oxygen<span>, </span>water vapor<span>, </span>carbon dioxide,methane<span>, </span>nitrous oxide<span>,</span>
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Which are come of the advantages of body segmentation?
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Answer:

b. Segments can become specialized on a particular function

Explanation:

Segmentation conditions virtually every aspect of the structure and functioning of animals with a consecutive body. Generally speaking, we can say that the main advantage of segmentation is that each segment can become specialized in a specific function.

One of its advantages is related to locomotion and comes, on the one hand, from the fact that the volume of celiac fluid remains constant in each compartment, acting as an antagonistic force against which muscles can act and, on the other, from the possibility of independently control each segment . This allows the peristaltic movement (circular muscle contraction wave followed by longitudinal muscle contraction) to be localized and involve only those muscles that are strictly necessary, making the movement's energy needs considerably more profitable.

The compartmentalization of the body led to the repetition of structures, namely excretory, nervous and circulatory in each segment. This can be seen as another advantage of segmentation as it may lessen the impact of damage to the animal's body; Undamaged segments can maintain their normal functions and thus increase the likelihood that the animal will overcome the damage sustained.

Another advantage is that segmentation allows modification of certain portions of the body to perform specialized functions such as feeding, locomotion and reproduction.

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Depending on if your speaking of a human or animal.  The kind of animal matters as well.  Hind limbs tend to be stronger like with frogs and rabbits because they use them to jump and kick.  With animals like squirrels, there forelimbs are used for picking up food.  Hind limbs are also longer on many animals.  
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