1. Network a) A collection of more-or-less permanent data

b) two or more computers connected together in such a way that they can share resources

c) The collection of physical parts of a computer system​

Ну вроде так)
1 
1Pollution of the atmosphere,
2Depletion of the ozone layer,
3Acid rain,
4Air pollution,
5Garbage and waste
6Pollution of natural waters
7Pollution of the marine environment                                                                              2     
  I need to take care about the environment, organize funds, care of the trees do gardening its region and try to explain to people that it is very important to maintain the purity of                                                      

Ну вроде так)
1 
1Pollution of the atmosphere,
2Depletion of the ozone layer,
3Acid rain,
4Air pollution,
5Garbage and waste
6Pollution of natural waters
7Pollution of the marine environment                                                                              2     
  I need to take care about the environment, organize funds, care of the trees do gardening its region and try to explain to people that it is very important to maintain the purity of