Carbon footprint and water footprint

The water footprint graph below is for 100 liters of water used in producing 1 bag of almond. What are the amounts of surface water, rainwater and water for treating wastewater, used in producing 1 bag of almond, respectively?

• 20 liters of surface water, 10 liters of rainwater and 70 liters of water used for treating wastewater.

• 70 liters of surface water, 10 liters of rainwater and 20 liters of water used for treating wastewater.

• 10 liters of surface water, 20 liters of rainwater and 70 liters of water used for treating wastewater.

• 20 liters of surface water, 70 liters of rainwater and 10 liters of water used for treating wastewater.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-4

Which is NOT correct about carbon footprint?

• A carbon footprint corresponds to the whole amount of carbon dioxide produced from particular activities.

• Carbon footprint is usually measured in carbon dioxide equivalent.

• Some of the greenhouse gases included in the carbon footprint calculation are methane, nitrous oxide and HFCs.

• Carbon footprint helps consumers choose environmental friendly products.

Two jars of jam have with different carbon footprint labels as shown below. Regardless of the taste, which jar should one who cares about the environment buy and why?

• The purple jar because more greenhouse gases are produced throughout the cycle.

• The purple jar because less greenhouse gases are produced throughout the cycle.

• The orange jar because less greenhouse gases are produced throughout the cycle.

• The orange jar because more greenhouse gases are produced throughout the cycle.

Tags

NGSS.MS-ESS3-4

Which is NOT correct about greenhouse effect?

• The effect is caused by trapped warmed air in the Earth's atmosphere.

• Greenhouse gases absorb and emit radiation back to earth.

• The effect is beneficial to human if there is not too much greenhouse gases.

• The effect leads to rising temperature on the earth's surface.

Tags

NGSS.MS-ESS3-5

What should one do in an earthquake situation?

• Student A stop doing everything and stay still

• Student B get into a room and lock

• Student C get down under a strong table and stay there

• Student D take an elevator to go down to the ground area