Human Footprint Quiz

What makes the giant ground sloth a favorite among ancient creatures?

• Its small size

• Its giant size and being a sloth

• Its ability to fly

• Its speed and agility

What was the initial assumption about the bones found at La Brea Tar Pits?

• They were human remains

• They were dinosaur bones

• They were from birds

• They belonged to cattle

What does the La Brea Tar Pits site provide in terms of ecological history?

• A record of ancient human civilizations

• A glimpse into future ecosystems

• A high-definition view of a long-gone ecosystem

• A view of modern ecosystems

What is the 'overkill hypothesis' related to?

• The extinction of plant species

• The extinction of marine life

• The extinction of North American megafauna due to human hunting

• The extinction of dinosaurs

What significant event occurred around 13,200 years ago affecting the megafauna?

• A large meteor impact

• Widespread fires

• A series of volcanic eruptions

• A massive flood

What is the primary cause of wildfires in Southern California today?

• Lightning strikes

• Volcanic activity

• Human activities

• Spontaneous combustion

What role did humans play in the ecosystem changes 13,000 years ago?

• They caused widespread fires

• They introduced new plant species

• They built large cities

• They domesticated large animals

What is a mass extinction typically defined as?

• 75% or more of all species going extinct

• All large animals going extinct

• 50% of species going extinct

• 90% of plant species going extinct

What does the La Brea Tar Pits site reveal about the relationship between climate and biodiversity?

• Biodiversity affects only climate

• Climate affects only plant biodiversity

• They are unrelated

• They are closely interconnected

What is the potential future concern discussed in the video?

• A global flood

• A sixth mass extinction

• A new ice age

• A volcanic winter