People and the Earth's Ecosystem

A natural resource that is naturally formed much more slowly than we use it is called __________

• renewable
• nonrenewable
• ecological
• stustainable

Which of the following is an example of a renewable natural resource?

• crude oil
• coal
• wave energy
• copper

Which of the following is an example of a nonrenewable natural resource?

• wind energy
• sunlight
• natural gas
• geothermal energy

In the last several hundred years, human population has ___________________ dramatically.

• Increased
• Decreased
• Stayed the same
• none of the above

In a controlled study, all variable are controlled except two.

• False
• True

Science can never completely prove or disprove and idea.

• True
• False

A__________________tree has leaves that drop in the winter as an adaption to cold temperatures.

• coniferous

• deciduous

• evergreen

• temperate

Which aquatic ecosystems are most appropriately described as the "Nurseries of the sea?"

• Estuaries

• Wetlands

• Deep oceans

• Coastal oceans

When more carbon is released into the atmosphere?

• the Earth is cooler

• the Earth is warmer

• is only from human activities

• happens naturally only

What does it mean when a city is quarantined during a virus outbreak?

• Everyone in the city is infected

• No one can enter or leave the city

• The city's population is immune to the virus

• Doctors in the city are developing a cure