Which observation provides strong evidence that Earth’s climate is warming?

What has been happening to most glaciers worldwide as global temperatures rise?

Which change is being observed in the Arctic as a result of warming?

Which is an example of a biological indicator of climate change?

Rising global sea levels are partly caused by:

Which temperature trend best supports the evidence of global warming?

What is the main role of greenhouse gases in Earth’s atmosphere?

Which gas is released in large amounts when fossil fuels are burned?

Which greenhouse gas is strongly associated with livestock, landfills, and natural gas production?

Which human activity contributes significantly to increased atmospheric carbon dioxide?

Why can an increase in greenhouse gases cause global warming?

Which of the following is NOT a major greenhouse gas?

What does ENSO stand for?

Which ENSO phase is generally associated with unusually warm sea-surface temperatures in the central and eastern tropical Pacific?

Which ENSO phase is generally associated with cooler-than-average sea-surface temperatures in the central and eastern tropical Pacific

During the neutral phase of ENSO, conditions in the tropical Pacific are generally:

During a typical El Niño event, the trade winds in the tropical Pacific tend to:

Which condition is commonly associated with La Niña?

Which is a possible local impact of increased global temperatures?

In the Philippines, El Niño is commonly associated with:

La Niña in the Philippines can contribute to:

How can prolonged drought affect local communities?

Which sector is particularly vulnerable to changes in rainfall and temperature?

Why can coastal communities be vulnerable to global warming?

Which of the following is a renewable source of energy?

A community that receives strong sunlight throughout most of the year could reduce its dependence on fossil fuels by investing in solar energy systems.

Because renewable energy sources are naturally replenished, using solar and wind energy will always produce electricity continuously, regardless of weather conditions.

Replacing a coal-fired power plant with a renewable energy source can help reduce greenhouse-gas emissions because less fossil fuel is burned to generate electricity.

A community located near a river with a reliable flow of water may consider hydropower because moving water can be used to generate electricity without directly burning fossil fuels.

If a country increases its use of renewable energy, greenhouse-gas emissions will automatically become zero because renewable energy does not produce any environmental impacts.