Many lost due to cancer of a loved one, or just heard about the horrors of the disease. They therefore believe that cancer - it is a strong and powerful disease that can strike the human body and completely destroy it. In fact, the science of cell - cell biology - the opposite. Cancer cell by nature weak and poorly organized.Cancer begins with a cell containing an incorrect genetic information that makes her unable to fulfill its function. This cell could get the wrong information because of harmful chemical exposure, other external reasons, or simply because in the process of continuous reproduction of billions of cells in the body from time to time mistakes. If this cell begins to reproduce other cells with the same genetic structure violation, tumors, consisting of a large mass of abnormal cells. Usually protective (immune) system of the body recognizes these cells, destroys them, or at least limit their action so that they could spread. Now "everyone knows" that cancer is caused by carcinogens, genetic predisposition, radiation, or possibly malnutrition. In fact, none of these factors alone can not serve as a sufficient explanation of why one person gets cancer and another - no.
There are a lot of opinions in the world about visiting zoos. Zoo and reserve are as an attraction to people. Many people like watching different kinds of animals in the zoo. We like looking and observing them. And some people don’t think that the zoo can be harmful to animals.
Keeping the animals in the zoo has its benefits to people. We like viewing animals because it entertain us. We can watch animals with our own eyes and not in television. It is interesting to see how they behave, move and make sounds to communicate to their own animals and to people as well. Zoos are often used as places to preserve the endangered species, such as the giant pandas and tigers. Thanks to zoos, certain species of animals have been saved from extinction.
On the other hand, the zoo is harmful for animals. When animals stay in the zoo, people are depriving them of freedom. They don’t live a normal life in the forests and fields. Animals should stay in their normal habitat. We have the responsibilities to protect, nurture and preserving them in our environment.
I think that a zoo has some useful purposes to serve: to preserve the endangered species, to educate the public about wildlife, and for its visitors to have fun. So a zoo of course is a useful place for us and we should have them.
Many lost due to cancer of a loved one, or just heard about the horrors of the disease. They therefore believe that cancer - it is a strong and powerful disease that can strike the human body and completely destroy it. In fact, the science of cell - cell biology - the opposite. Cancer cell by nature weak and poorly organized.Cancer begins with a cell containing an incorrect genetic information that makes her unable to fulfill its function. This cell could get the wrong information because of harmful chemical exposure, other external reasons, or simply because in the process of continuous reproduction of billions of cells in the body from time to time mistakes. If this cell begins to reproduce other cells with the same genetic structure violation, tumors, consisting of a large mass of abnormal cells. Usually protective (immune) system of the body recognizes these cells, destroys them, or at least limit their action so that they could spread. Now "everyone knows" that cancer is caused by carcinogens, genetic predisposition, radiation, or possibly malnutrition. In fact, none of these factors alone can not serve as a sufficient explanation of why one person gets cancer and another - no.
There are a lot of opinions in the world about visiting zoos.
Zoo and reserve are as an attraction to people. Many people like watching different kinds of animals in the zoo. We like looking and observing them. And some people don’t think that the zoo can be harmful to animals.
Keeping the animals in the zoo has its benefits to people. We like viewing animals because it entertain us. We can watch animals with our own eyes and not in television. It is interesting to see how they behave, move and make sounds to communicate to their own animals and to people as well. Zoos are often used as places to preserve the endangered species, such as the giant pandas and tigers. Thanks to zoos, certain species of animals have been saved from extinction.
On the other hand, the zoo is harmful for animals. When animals stay in the zoo, people are depriving them of freedom. They don’t live a normal life in the forests and fields. Animals should stay in their normal habitat. We have the responsibilities to protect, nurture and preserving them in our environment.
I think that a zoo has some useful purposes to serve: to preserve the endangered species, to educate the public about wildlife, and for its visitors to have fun. So a zoo of course is a useful place for us and we should have them.