How Are Cockroaches Adapted to Survive?

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Topic: How are cockroaches adapted to survive?
Cockroaches are more powerful insects, which live in a wide range of environment almost around the world, form the east to west and form the north to south, and human can see them in different districts around the world. The Cockroaches have about 30 species out of 4500 total are associated with human habitats and about four species are well known as pests. However, why they can succeed in the world? Follow that I will do some researches approach their morphology, mode of nutrition, reproduction and evolution to find the reasons.

Morphology
About Cockroaches’ morphology, there are some points should be discussed. First of all, the Cockroaches are around over 50% volume fat in their body. The fat very important for Cockroaches, it is because fat not only provide protection function to their organs, but also become their food reservation for over several weeks when they can’t find a new source of foods. Also, their body consists has a waxy skeleton like ants and it is very hard to killed by hitting or pressing; at the same time, skeleton become the restriction in the growth of their body as the bigger of their body, the more oxygen required. This can helps them to survive in some extreme cases like small spaces that nearly no air supports.

Mode of nutrition
Cockroaches are very interesting, because they are omnivorous animals. The most favorite foods of Cockroaches are starch and meat. No one can guess it; even Cockroaches can eat some paper, sheet, CD and also human excrements. Cockroaches are among the hardiest insects on the planet. Some species are capable of remaining active for a month without food, and some even have been known to live up to three months without food and a month without water. The only one food Cockroaches do not eat, and to food is cucumber. So, we can see that it almost eat anything is organic. Also, what we can see as the variety of food that Cockroaches eat is very...
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