Global Ecosystems and Climate Change

Mr. Anderson discusses how ecosystems are affected by environmental changes, focusing on human-induced climate change, geological shifts like continental drift, and meteorological phenomena such as El Nino. He explains the impact of these changes on ecosystems, including species extinction and habitat transformation, and emphasizes the importance of understanding these effects to mitigate future impacts.

What is the primary effect of contrails on the climate?

• They reduce air pollution.

• They trap heat in the atmosphere.

• They increase rainfall.

• They cool the Earth's surface.

Which event allowed scientists to study the impact of jet traffic on weather?

• The 9/11 attacks

• The 2010 Haiti earthquake

• The 2004 Indian Ocean earthquake

• The 2008 financial crisis

What is a positive feedback loop in the context of global warming?

• A cycle that amplifies warming effects

• A method to cool the Arctic

• A strategy to decrease greenhouse gases

• A process that reduces global temperatures

Which gas is released from melting permafrost, contributing to global warming?

• Methane

• Oxygen

• Helium

• Nitrogen

What is the predicted impact of a 1-degree Celsius increase on coral reefs?

• Coral reefs will remain unchanged

• Coral reefs will expand

• Coral reefs will become bleached

• Coral reefs will thrive

What percentage of global ecosystems is expected to transform with a 1-degree Celsius change?

• 5%

• 30%

• 10%

• 20%

What was the supercontinent called before it split into Gondwana and Laurasia?

• Gondwana

• Pangaea

• Atlantis

• Eurasia

Which type of mammals are primarily found in Australia?

• Eglan mammals

• Placental mammals

• Marsupial mammals

• Marine mammals

How often does El Nino typically occur?

• Every 10 to 15 years

• Every 1 to 2 years

• Every 2 to 7 years

• Every 20 to 25 years

What happens to marine iguanas during El Nino?

• They grow larger

• They migrate to colder waters

• They become more aggressive

• They shrink in size