Are We Out of Clean Water?

1. From space, our planet appears to be more ocean than Earth. But despite the water covering 71% pf the planet's surface, more than half of the world's population face a problem of . . .

• lack of food

• extreme water scarcity

• lack of manner

• lack of animals

Current estimates predict that by 2040 . . .

• up to 20 more countries could be experiencing water shortages

• no problem of water

• water will be abundant

• water will be safe

At a planetary scale, why can't Earth run out of freshwater?

• because of life cycle

• because we try to keep it

• because of water cycle

Based on the video, what is water cycle?

• a system that continuously vanish water

• a system that continuously reduce water

• a system that continuously produces and recycles water

• a system that continuously takes water

based on the video, the water cycle system is as follow;

• change into gas only

• change only into vapour

• change nothing

• morphing water from vapour, to liquid, to ice as it circulated around the globe

97% of Earth's liquid is . . .

• freshwater

• saltwater

• milkwater

why can't the saltwater be used for humans?

• it is because too loaded with minerals

• it is because too dirty

• it is because too difficult to get

Of the remaining 3% of potentially usable freshwater, where is the more than two-thirds freshwater is frozen? ( choose 2)

• ice caps

• glaciers

• in the sea

• in the bowl

How many percent of the remaining freshwater that is accessible for humans?

• less than 1 %

• Less than 20%

• Less than 30%

• 50%

the 1% of freshwater spread across the places below ( click all the possible answers!)

• rivers

• lakes

• aquifers

• ground ice

• permafrost