A stable ecosystem in which a large number of species live together is_______.

• Global warming
• ecological balance
• climate change
• infectious disease

Many countries have signed up to international agreements which aim to reduce the negative _______ of climate change.

• disease
• illness
• emission
• impact

Global warming is an increase in the average _______of the earth’s atmosphere.

• climate
• balance
• temperature
• vehicle

An increase in the average temperature of the earth’s atmosphere is _______.

• climate
• carbon footprint
• global warming
• emission

A gas or other substance which is sent out into the air is _______.

• emission
• greenhouse gas
• carbon footprint
• disease

0._______is destroying larger areas of tropical rain forests.

• Disforestation
• Deforestation
• Anti-forestation
• forests

Bob _______having stolen Mary’s pocket calculator.

• admitted
• agreed
• dreamed
• accepted

She’s angry about_______ to the farewell party last night.

• not having invited
• not having been invited
• not to have invited
• not to have been invited

They all denied _______ her.

• to see
• of seeing
• having ever seen
• ever having seen

I look forward to ________home next month.

• go
• to
• go
• going