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ќпределите основную идею текста.

а) Plants role is important not only for todayТs satisfaction of needs of humans and other living beings but one should also bear in mind that they can affect the future of the climate of our planet protecting air, soil and water from negative effects of a greenhouse gas.

в) Botanists study classification, structure, function of plant life while some organisms once included in its field are no longer considered to belong to the plant kingdom: fungi, lichens, bacteria, viruses and single-celled algae.

с) One can hardly imagine how would it be possible for living beings to exist on the Earth without plants as they generate the oxygen, food, fibres, fuel and medicine, reduce the level of a greenhouse gas which in large amounts threatens the EarthТs climate.

д) Studying plants promotes people and other living beings not only to use their advantages, but also provides us with knowledge of their influence on the evolution of the Earth climate in the past and enables us to realize their importance for the future of our planet.

ќпределите, какое утверждение соответствует содержанию текста.

а) It is considered that the evolution of photosynthetic plants influenced the ancient atmosphere of the Earth.

в) Botanists are concerned with study of plants retrospective influence on the EarthТs atmosphere.

с) It is thought that plants make no valuable contribution to the present global climate improvement.

д) Some organisms (fungi, lichens, bacteria, viruses, single-celled algae) are part of the plant kingdom.

3.ќтветьте на вопрос:

Why do scientists pay special attention to the study of plants nowadays?

1)They believe that the understanding of evolution of plants help them predict future global atmosphere of the Earth.

2)Scientists consider some organisms (fungi, lichens, bacteria, viruses, single-celled algae) as part of the Protista.

3)Scientists conclude that due to some negative changes in global climate many plants are endangered.

Plants can change global climate for the better, as well as they are the sources of food, medicine and fuel for an expanding population.

«авершите утверждение согласно содержанию текста.

The role of plants for humansТ life is great because Е

1)plant life can be studied by them from different perspectives

They provide them with all necessary things to exist

3)for some people they are the only source of nutrition

4)future generations will mostly depend on them as a source of nutrition

 

Agriculture

1. Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization. The study of agriculture is known as agricultural science. Agriculture is also observed in certain species of ant and termite, but generally speaking refers to human activities.



2. The history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. However, all farming generally relies on techniques to expand and maintain the lands suitable for raising domesticated species. For plants, this usually requires some form of irrigation, although there are methods of dryland farming; pastoral herding on rangeland is still the most common means of raising livestock. In the developed world, industrial agriculture based on large-scale monoculture has become the dominant system of modern farming.

3. Modern agronomy, plant breeding, pesticides and fertilizers, and technological improvements have sharply increased yields from cultivation, but at the same time have caused widespread ecological damage and negative human health effects. Selective breeding and modern practices in animal husbandry such as intensive pig farming have similarly increased the output of meat, but have raised concerns about animal cruelty and the health effects of the antibiotics, growth hormones, and other chemicals commonly used in industrial meat production.

 

1.ќтветьте на вопрос:

How do modern agricultural techniques influence our life?

1.They improve peopleТs health by providing them with qualitative food.


Date: 2015-12-17; view: 678


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