Environmental Impact and Ecosystem Dynamics

The video discusses how animals, plants, and humans impact their environments. Prairie dogs and beavers modify landscapes by building homes, while animals like macaws aid in plant growth through seed dispersal. Plants can change their surroundings by expanding roots into cracks. Humans affect the environment positively by recycling and negatively by deforestation. Controlled burns are beneficial for forest health, preventing wildfires, and promoting new growth.

How do prairie dogs alter their environment?

• By changing the color of the soil

• By migrating to different areas

• By digging tunnels and creating burrows

• By building nests in trees

What is the primary material beavers use to construct their dams?

• Sand

• Leaves

• Trees and sticks

• Metal

How do macaws contribute to environmental changes?

• By eating insects

• By changing the color of flowers

• By dispersing seeds through their droppings

• By building nests in high trees

What effect do plant roots have on their environment?

• They produce new seeds

• They change the color of the leaves

• They expand cracks in rocks and concrete

• They create new soil

What is one positive way humans can impact the environment?

• By using more plastic

• By recycling and cleaning up trash

• By cutting down trees

• By building more roads

What is a negative impact humans can have on the environment?

• Planting more trees

• Littering and deforestation

• Using renewable energy

• Recycling waste

What is the purpose of controlled burning in forests?

• To clear space for new buildings

• To increase the number of insects

• To maintain forest health and prevent wildfires

• To create more smoke

How does controlled burning benefit the soil?

• It removes all nutrients

• It adds harmful chemicals

• It returns nutrients to the soil

• It makes the soil dry

What happens to a forest after a controlled burn?

• It becomes colder

• It receives more sunlight and open space for growth

• It is covered in water

• It becomes barren and lifeless