S1_6.3 Consequences - extracting resources from tropical forests

Define deforestation.

• When land is being converted to mines.

• Vegetation prevented from regenerating.

• The permanent removal of tropical forests for their wood and other human activities like mining and agriculture.

• When tree species face extinction.

When a tropical forest grows again, it will have the same biodiversity of a tropical forest that has been untouched by humans.

• True

• False

Amazon rainforest in South America has lost more than 11% of its original rainforests.

• True

• False

Deforestation is on the rise in Brazil where 60% of the Amazon rainforest is located. Up 57% of the 15,000 tree species are likely to face extinction.

• True

• False

Coastal development and expansion of aquaculture does not destroy mangroves.

• True

• False

Bangladesh and the Philippines have lost a significant amount of their mangroves, putting them at risk from coastal erosion.

• True

• False

Which of the following are greenhouse gases?

• Carbon dioxide

• Methane

• nitrous oxide

• All of the above

This is an image showing _____________.

• moving gases

• the greenhouse effect

• deforestation

How does the greenhouse effect keep earth warm enough for life?

• When sunlight enters the atmosphere and reaches the earth's surface.

• When earth’s surface absorbs the light energy and warms up, releasing heat.

• With greenhouse gases in the atmosphere, not all of the heat is able to escape into outer space, trapping heat and keeping earth warm.

• When more heat is trapped, increasing earth's temperature.

Increased carbon dioxide may cause global warming by _________________________.

• allowing more sunlight into the atmosphere.

• reflecting more sunlight from clouds.

• reducing the amount of oxygen in the air.

• trapping more heat in the atmosphere.