What does sustainability mean? 

• Avoiding the depletion of natural resources in order to maintain ecological balance.
• using only fossil fuels
• using only non-renewable resources

What is NOT a sustainable practice?

• recycling
• reducing
• reusing
• buying 

Which of the following sources of energy is non-renewable?

• sun
• wind
• water
• fuel

Which of the following increases demand that pushes the environment to its limit?

• use of fossil fuels
• pollution
• population growth
• tecnology

A sustainable city is 

• a city that use clean energy
• a city tha reduce the pollution that they generate
• a city that recycle, reuse and reduce
• all are correct

Water resources are uniformly (equally) distributed around the world.

• True

• False

What is one of the areas of the ocean called where marine debris (garbage) has combined due to ocean currents?

• The Great Pacific Dump Truck

• The Great Pacific Garbage Patch

• #Smelly

• The Great Pacific Pristine Pool

Organic waste, like fruits and vegetables, is considered

• biodegradable

• nonbiodegradable

Most energy used by humans comes from:

• the sun
• the moon
• the earth
• water

 Energy from the sun is known as......... 

• hydroelectric energy
• geothermal energy
• solar energy
• wind energy