Environmental Science
"Ozone Hole" is a _____________

Hole in the troposphere
Hole in the hydrosphere
Hole in the atmosphere
Destruction of ozone layer

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
Biogas is composed of

carbon dioxide, nitrogen and hydrogen
ethane, carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and sulphur
methane, carbon dioxide, nitrogen and hydrogen

ANSWER DOWNLOAD EXAMIANS APP