Номер - 1
1. b
2. a
3. c
номер - 2
1. Because it's harmful to all creatures living on the land. As most creatures on the Earth breathe air.
2. Because it's to all creatures livivng on the Earth. As all creatures on the Earth drinks water and some even live in the water
3. Because pollution of the soil leads to death of plants which animals eat. Also it leads to death of the animals living in the soil.
номер - 3
hundreds, lived, harmony, scientific, progress, environment, srious, soil, ozone, polititcal.