Environmental Science
Without the atmospheric greenhouse effect, the average surface temperature would be:

Much more variable than it is now
Lower than at present
Higher than at present
The same as it is now

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
Ecology is

The study of the environment in the absence of humans
Integrates both social and natural sciences to help us understand how the earth works,
The science that studies the evolution of life,
The study of the relationships between organisms and their environment

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
Biogas is composed of

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

ANSWER DOWNLOAD EXAMIANS APP