Iii. put in prepositions where necessary. years there has been increasing interest global warming and there is no doubt that man’s activities are partly it. we can’t afford to ignore a warning its possible effect the climate. forecasts a warmer wetter world suggest, for instance, that the sea will have risen by as much as five metres 2050. that case large areas of london and many other coastal towns would be water.

In   recent years there has been increasing interest  in   global warming, and there is no doubt that man's activities are partly responsible  for   it. we can't afford to  ignore a  warning  of its possible effect  on   the climate. forecasts of  a warmer, wetter world suggest,  for  instance,  that the sea will have risen by as much as five metres  by   2050.  in   that case, large areas of london and many other coastal towns would be  under   water.

To understand how paper is made, you must first determine its type, because the composition of the raw materials can be different. The main material in the paper industry is wood. Whole shafts are delivered to the mills. There they remove the bark, cut it. Then the raw materials are ground into flour - to fibril fibers. The technology consists of the following stages:

mass treatment - grinding, dyeing, mixing plant and chemical components;

dilution of the mass with water, purification, pressing and drying;

calendaring;

cutting, sorting and packaging. The paper manufacturing process begins with the grinding of raw materials in continuously operating machines. The factories use rolls, conical and disk type mills, refiners. The paper manufacturing process begins with the grinding of raw materials in continuously operating machines