The ____________________ Protocol was signed in 1997 by Prime Minister Jean Chrétien,a pledge to reduce Canada's greenhouse gas emissions.

Kyoto Protocol

An international treaty that commits its parties to reduce greenhouse gas emissions, based on the premise that global warming exists and is influenced by human activities.

Greenhouse Gas Emissions

The release of gases into Earth's atmosphere that trap heat, contributing to global warming and climate change.

Signed

Used to indicate whether a numerical value is positive or negative.