Вопрос № 223713 - Английский язык

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Electricity is the power that has made possible the engineering progress of today. In fact, electricity has always been with a man, but only within the last few centuries he has learned to apply it.
One hundred years ago there were neither electric lamps, nor electric motors, nor telephone, nor radio. Now electricity is everywhere. We use electricity in our homes and in buildings where we work or study. Electric lamps light our rooms. The uses of electricity in our homes do not end with producing light. How many electric motors are working in our homes! Electric motors operate washing machines, refrigerators, vacuum cleaners, fans, clocks, and other electrical appliances.

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Electricity is the power that has made possible the engineering progress of today. In fact, electricity has always been with a man, but only within the last few centuries he has learned to apply it.
One hundred years ago there were neither electric lamps, nor electric motors, nor telephone, nor radio. Now electricity is everywhere. We use electricity in our homes and in buildings where we work or study. Electric lamps light our rooms. The uses of electricity in our homes do not end with producing light. How many electric motors are working in our homes! Electric motors operate washing machines, refrigerators, vacuum cleaners, fans, clocks, and other electrical appliances.

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Seed starts to germinate only under certain conditions. The optimum temperature at which seeds germinate best varies with different kinds of seed. The optimum temperature for the germination of wheat, for instance, is about 270C. Cotton and corn germinate best at about 350C.
Seeds of all crops need enough air for germination as oxygen is necessary for certain chemical reactions which take place in the plant food in the seed.
These reactions take place only, when water is present. So, moisture is also necessary for the germination of seeds.
This, a seed does not germinate: 1) if the temperature is not proper, 2) if there is not enough moisture and air in the soil.

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Agriculture is a human activity in which people use areas of land to produce food, clothing and other necessary materials.
The word ager is a Latin word. It means a field. The word agriculture means the cultivation of fields and growing crops. But this is the old meaning of this word. Now it also means the use of land to breed animals. At present there are two main branches of agriculture. They are crop growing and animal breeding.

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Everybody needs to know what tomorrow’s weather will be. Farmers are greatly dependent on the weather changes which may destroy a whole year’s work in a few hours. Being dependent on the weather they observe about them. They notice changes. They notice what happens just before the wind blows, fog forms, rain or snow falls. They learn to know the signs of changing weather. Observations of the weather have been carried on over a long period of time. Some of these observations resulted in beliefs that are true but also in some that are not.

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Meat preservation helps to control spoilage by inhibiting the growth of microorganisms, slowing enzymatic activity, and preventing the oxidation of fatty acids that promote rancidity. There are many factors affecting the length of time meat products can be stored while maintaining product safety and quality. The physical state of meat plays a role in the number of microorganisms that can grow on meat. For example, grinding meat increases the surface area, releases moisture and nutrients from the muscle fibres, and distributes surface microorganisms throughout the meat. Chemical properties of meat, such as pH and moisture content, affect the ability of microorganisms to grow on meat. Natural protective tissues (fat and skin) can prevent microbial contamination, dehydration, or other undesirable changes. Covering meats with paper or protective plastic films prevents excessive moisture loss and microbial contamination.