Shortage of food plants, erosion of land, and decrease in oxygen levels are all effects of _. immigration
mining
trade
deforestation

deforestation

Explanation:

because trees produce oxygen and there destroying crops which produce food

deforestation

a.that is my answer.

brainliest .

the best description of postwar writers might be progressive.

following the war, writers showed a tendency to work on artistic or social matters rather than political themes. while postwar literature may not have been the greatest period of english literature, the themes provided excellent critics a high number of novels. such examples include anthony burgess, anthony powell and frank kermode, all of which can be placed under the progressive view.