GLOBAL SUCCESS 11 UNIT 5-TEST 1 P2

Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse _______.

• causes

• effect

• gas

• damage

Certain _______ in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping.

• effects

• emissions

• gases

• layers

Carbon dioxide is released through_______ processes such as respiration and volcano eruptions and through _______ activities such as deforestation, land use changes, and burning fossil fuels.

• human-natural

• natural – human

• man-made-ordinary

• ordinary-man-made

Although global warming is causing changes in weather patterns, it is only one aspect of ________

• global warming

• ecological balance

• climate change

• carbon footprint.

Certain ______ in the atmosphere such as carbon dioxide, methane and nitrous oxide, block heat from escaping.

• effects

• emission

• gases

• layers

_____________ means changes in the earth’s weather, including changes in temperature, wind patterns and rainfall.

• global warming

• ecological imbalance

• greenhouse effect

• climate change

Greenhouse gas __________ from factories and vehicles can result in global warming

• emit

• emissions

• effects

• causes

Most of the jungle was ________________ to get wood in order to produce paper products.

• deforested

• threatened

• warned

• emitted

A large amount of carbon dioxide __________ are released into the atmosphere by burning fossil fuels.

• emit

• carbon footprint

• emissions

• greenhouse gas

Oil spills are a great ____________ to the undersea world

• threat

• threaten

• threatened

• threateningly