Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ozone Layer and the Formation of the Ozone Hole   The current state of this problem has briefly been considered. The hypothesis
on the formation of the ozone hole due to the action of some molecules emitted
by the rockets has been suggested.

29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex