Human Impact

The process in which plants use energy from the sun to convert carbon dioxide and water into oxygen and glucose.

• respiration 
• decomposition
• photosynthesis
• combustion

The process in which organisms use oxygen to release the stored energy in sugar.

• photosynthesis
• respiration
• decomposition
• combustion 

What is the greenhouse effect?

• the burning of fossil fuels causes gases to mix with water in the atmosphere
• ground level ozone and vehicle exhaust react in the presence of sunlight
• certain gases such as carbon dioxide act like a blanket and keep the sun's energy close to earth

Which is a cause of climate change?

• melting of sea ice
• cutting down trees
• severe storms 
• changes in plant life 

Which is an effect of climate change?

• melting of sea ice 
• burning of fossil fuels
• cutting down trees 
• vehicle exhaust

1. What would Earth be like without the greenhouse effect?

• The same temperature

• a little cooler than it is now

• . Too cold to live

• a little warmer than it is now

What is global warming

• the normal temperature fluctuations of Earth's climate cycle

• the melting of the polar ice caps

• the trend of increasing temperatures on Earth

• the changes in Earth's biosphere that affect the atmosphere

Combustion is another word for __________.

• Transportation
• Respiration
• Fossil Fuels
• Burning

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above