Beavers and Their Impact on Ecosystems

Beavers are vital to ecosystems, creating habitats and regulating water flow. Native Americans revered them for their social behavior and environmental benefits. Europeans exploited beavers for their fur and scent glands, leading to their near extinction and ecosystem collapse. Restoring beaver populations can help revive ecosystems and manage water resources.

How do beavers create safe habitats for themselves?

• By digging underground tunnels

• By building nests in trees

• By living in caves

• By constructing dams

What seasonal change occurs in the diet of beavers?

• They switch from bark to wetland plants in spring

• They eat more fish in winter

• They eat more insects in summer

• They switch from leaves to grass in autumn

What is one of the ecological benefits of beaver dams?

• They reduce water quality

• They increase soil erosion

• They regulate floods and droughts

• They create deserts

Why did Native American tribes revere beavers?

• For their ability to fly

• For their role in purifying water

• For their colorful feathers

• For their ability to sing

What role do beavers play in their family groups?

• They care for their offspring

• They migrate frequently

• They are solitary hunters

• They live alone

What did Europeans primarily value beavers for?

• Their singing abilities

• Their ability to build houses

• Their scent glands and fur

• Their medicinal leaves

What was a consequence of the beaver population decline in North America?

• Expansion of forests

• Increased rainfall

• Growth of new rivers

• Dried up ecosystems

What is castoreum, and why was it valuable?

• A type of wood used in construction

• A powerful painkiller from scent glands

• A compound used in perfumes

• A type of fur used for clothing

What was a major use of beaver fur in Europe?

• Crafting musical instruments

• Making shoes

• Building houses

• Creating waterproof hats

How can reintroducing beavers benefit the environment?

• By increasing desertification

• By restoring rivers and wetlands

• By reducing biodiversity

• By causing more floods