Please help me!
(how does nitrogen oxide destroy ozone layer?write with chemical reaction)

In nature, bacteria in soil and the oceans break down nitrogen-containing compounds, releasing nitrous oxide.  Nitrous oxide, like CFCs, is stable when emitted at ground level, but breaks down when it reaches the stratosphere to form other gases, called nitrogen oxides, that trigger ozone-destroying reactions

Explanation:

format change of dna.  

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.