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Genetically modified mosquitoes drop Zika virus can cause many consequences
The release of genetically modified mosquitoes into the wild to prevent disease spread by mosquitoes, such as Zika virus, malaria, dengue fever is premature and could cause unintended consequences.
This is the warning of the US scientists released on 9/6.
Professor James Collins of Arizona State University, and a co-chairman of the Commission of the national academy of science, engineering and medicine, affirmed should be cautious and conduct more studies of the consequences of social, scientific as well as the release of genetically modified organisms into the environment.
Commission warns on genetically modified technology could cause harmful effects such as reducing the number of other insects, or even more dangerous is the creation of new species capable of rapid spread of disease than.
The researchers called for further studies conducted, the tests in stages and closer collaboration between scientists.
How to avoid waste of energy?
With fast growth of civilization there is also an ever mounting need for energy. Energy may be in the form of fuels or electricity. Petrol is a liquid fuel which is used widely nowadays. But this kind of fuels is likely to be exhausted at the rate man is using it recently.
To meet the challenge, various methods have been suggested. One is to minimize the man’s demand in using the energy. Non-essential consumption should be minimized. During certain days of the year, people all over the world turn off the electricity for 1 hour to save the energy. Modern gadgets consuming energy should only be used when they are absolutely necessary.
Energy conservation is possible through modernization of plant and equipment. People should replace the obsolete equipment by the modern ones.
Energy can be saved on transport by the following methods. People should commute by the rail rather than by cars and vans. The transport must be improved with a view to sparing the energy. Cities must be planned in such a way that the commuting distance from this place to others is minimized.
In industry, many things could be done to reduce waste of energy or to economize energy. The machine maintenance needs to be tightened; heater must be utilized properly. When systems are streamlined, economy in fuel is obvious. Instead of using materials requiring higher energy, those which require lower energy should be used.
We hope man with his ever rising urge for existence will cope up with this urgent problem and find alternatives.
Thiết bị điện tử thì k nên dùng rồi. Bạn khai triển ra: vì nó làm hs k tập trung trong lớp học hay sao đó, v,v
Culture diversity is the hallmark of human sociaty,so it 's a nesessity for development and human survival.The culture diversity is the origin of identity,of innovation and creativity,help link people around the world.It's driving force for growth,not just economic growth but also for enriching the river of intellectual,emotional,moral and spiritual life.There is a great deal of cultural diversity in suchs areas:economy,security,defense,enviroment,sociaty...
*Chào chị ,bài văn này có vẻ hơi ngắn vì em mới học lớp 6 nên vốn từ chỉ có vậy thôi,chị dùng tạm ,chị nhé!!
Feudalism, in the moral sense of the "five limbs," the children but also the parents are always dependent, the marriage of parental children have the right to arbitrary and "where to sit there." If the offspring are not satisfied with the wife (or husband) the parents specify, there is only a way out of the home. It is not necessary to know the love of children, only to find where the "subject to the parent" is the parents of the "matchmaking" to engage in engagement so bad marriage and marriage.
In ancient times the purpose of marriage is to maintain the family so marriage is the work of the clan, not the children's own. So the wife is married to the decision of the parents. The obligation of each person to ancestors, the family is to propagate later to "the eternal lineage", so the moral for the "unspoilt" is a great irrelevance. Marriage is not only a cause of blood, but also economic. The wife not only has to give birth to a daughter but also to work and care for housework for her husband's family.