Question

Define the following (a) Ozone hole (b) Tropopause (c) Global warming

Answer 1

a) Any part of the ozone layer that has become depleted by atmospheric pollution, resulting in excess ultraviolet radiation passing through the atmosphere know as ozone hole.

b) The boundary, or transitional layer, between the troposphere and the stratosphere is called Tropopause.

c) Global warming is the gradual rise in the earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere.

Answer 2

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We give the following definitions. Definitions: A thermodynamic phase of a simple material is an open, connected region in the space of thermodynamic states parametrized by the variables T and µ, the pressure P being analytic in T and µ. ... Phase transitions occur on crossing a phase boundary.