Are economic materials important for our modern technology? 

State 3 reasons / examples .

Which one is the example of surface water?

• Bathtub

• Ponds

• Pail

The answer below show the negative effects of unplanned human activities,except of.....

• Deforestation

• Erosion

• Earth become clean and beautiful

• Flash Flood

The video that you watch just now about hydrothermal process in nature,which one is not inside the video?

• Hydrothermal vents

• Gysers

• Hot water

• Hot Springs

Which organism died and form coal?

• Microorganism

• Human

• Plants

• Animal

Which one is not the importances of underground water?

• Drinking water

• agriculture

• Food

• let the live organisms to take a bath

Economic materials consist of two types material,which is....

The negative effects of open burning,except of.....

• Air pollution

• sound pollution

• global warming

• Flash flood

Which dead organisms form the petroleum and natural gas?

• Dead marine organisms

• Dead microorganism

Deforestation cause global warming.

• True

• False