G9 Worksheet

Human activities are increasing the level of greenhouse gases in the atmosphere.

• True

• False

What is an effect of global warming?

• melting glaciers and rising sea levels

• population is increasing

• more forest areas

• all of the above

Scientists have observed a gradual increase in temperatures in locations all across Earth, an event often called________________

• Global warming

• Climate change

The increase in temperature is one aspect of_________________, a long-term change in weather patterns

• Global warming

• Climate Change

Human activities have altered many natural environments by________________

• monoculture

• deforestation

• pollutants

• smog

Many lands are now fields where only one farm crop is grown, an example of a(n)

• monoculture

• deforestation

• ozone layer

• smog

A consequence of global transportation has been the spread of ___________________ that outcompete or prey on native species.

• invasive species

• smog

• carbon dioxide

• ecosystems

• human inputs to the global energy budget

• human causes of changes to global systems

• human activities that are independent of global change

• the effects on human society of changes to global systems

Global climate change is the result of increasing levels of carbon dioxide, methane, and other greenhouse gases in Earth's atmosphere. How are the causes of ocean acidification and climate change related to one another?

• Acids in the ocean decompose to form carbon dioxide, which then diffuses into the atmosphere.

• Warmer ocean temperatures increase the stability of carbonic acid and other acids in the water.

• Carbon dioxide diffuses from the atmosphere to the ocean, where it reacts to form carbonic acid.

• Methane diffuses from the atmosphere to the ocean, where it reacts to form methanoic acid.

Cause and Effect:

Raising crops and lawns with nitrogen-rich fertilizers

• damage to the ozone layer

• poisoning of predators by biomagnification

• toxic algal blooms

• habitat loss and fragmentation