Ecosystem 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 global warming on ecosystems, including feedback loops and species extinction risks. The video also covers the historical context of continental drift and its influence on species distribution, as well as the effects of El Nino on marine life.

What phenomenon is created by jets flying over an area, affecting the climate?

• Auroras

• Tornadoes

• Hurricanes

• Contrails

What was the observed temperature change during the three-day period after 9/11 when jet traffic was halted?

• 1-degree Celsius

• 3-degree Celsius

• 0.5-degree Celsius

• 2-degree Celsius

Which gas is released from melting permafrost, contributing to a positive feedback loop in global warming?

• Oxygen

• Carbon Dioxide

• Methane

• Nitrous Oxide

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

• Increased growth

• No impact

• Bleaching

• Mass extinction

What percentage of global ecosystems is predicted to transform with a 1-degree Celsius temperature rise?

• 20%

• 15%

• 10%

• 5%

What was the supercontinent called that existed before continental drift?

• Laurasia

• Pangaea

• Atlantis

• Gondwana

Which type of mammals are primarily found in Australia due to historical continental drift?

• Marsupial mammals

• Marine mammals

• Egg-laying mammals

• Placental mammals

How often does El Nino typically occur?

• Every 20 years

• Every 10 years

• Every 2-7 years

• Every 1-2 years

What happens to marine iguanas during El Nino periods?

• They grow larger

• They migrate to new areas

• They experience a decrease in body length

• They become extinct

What is the primary reason for the decrease in marine iguana size during El Nino?

• Stress hormone release

• Predator presence

• Increased food supply

• Migration patterns