By Design, Chapter 4, Lesson 3

What is deforestation?

• Clearing Earth's forests on a massive scale
• Eating too much vegetables
• Going to a forest and pulling weeds
• Clearing the five trees in my backyard

What are the effects of deforestation ?

• loss of habitat
• increased green house gasses 
• soil erosion and flooding
• all of the above

What does deforestation affect?

• Plants and animals

• Our biosphere

• Humans

• All of the above

Does deforestation contribute to global warming?

• No, trees aren't that important

• Sometimes, because only the cutting down of Maple trees contributes to global warming

• No, deforestation adds methane to the atmosphere, which makes the Earth cooler

• Yes; less trees means less CO2 is turned into oxygen.

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Why is the increase of Greenhouse gasses a big issue?

• It causes climate change and increase in the global temerature 
• It can lead to a major increase in Greenhouses 
• It leads to more factories
• It causes a major decrease in people

Which of these is one cause of deforestation?

• Urbanization
• Buying a chirstmas tree during the holidays
• Overbreeding birds in the wild
• Cutting down the tree in your backyard

Which of these is one cause of deforestation?

• Urbanization
• Buying a chirstmas tree during the holidays
• Overbreeding birds in the wild
• Cutting down the tree in your backyard

What is a greenhouse gas that comes from cars?

• oxygen

• carbon dioxide

• heat

• Exxon