Environmental Science
Warming in the stratosphere is mainly caused by:

Frictional heating caused by meteorites
Release of latent heat energy during condensation
Absorption of ultraviolet radiation by ozone
Chemical reactions between ozone and chlorofluorocarbons

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Environmental Science
A term biotype means

all individuals having same genotype
all individuals having same phenotype
all individuals with different genotype
all individual with different phenotype

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