Forest Ecosystem Dynamics and Interactions

The video explores ecosystems, focusing on forest ecosystems and their components, including living and nonliving things. It explains food chains and energy transfer, emphasizing the importance of balance. Disruptions like natural disasters can upset this balance, but recovery is possible, as seen in Yellowstone after wildfires. The video also highlights human impact and encourages exploring real ecosystems.

What is an ecosystem composed of?

• Only nonliving things

• Only living things

• Only plants

• Both living and nonliving things

Which of the following is a living component of a forest ecosystem?

• Rocks

• Sunlight

• Water

• Birds

What does a food chain represent in an ecosystem?

• The growth of plants

• The cycle of seasons

• The transfer of energy between living things

• The movement of animals

In a food chain, what happens when one living thing is eaten by another?

• It gains energy

• It stays the same

• It loses energy

• It multiplies

What can cause an ecosystem to become unbalanced?

• A consistent food supply

• An increase in plant growth

• A decrease in animal population

• A stable climate

How can a wildfire affect a forest ecosystem?

• It can lead to both destruction and new growth

• It only benefits animals

• It has no effect

• It only causes destruction

What positive effect did the Yellowstone fires have on the ecosystem?

• Increased sunlight reaching the forest floor

• Eliminated all plant life

• Reduced biodiversity

• Decreased animal habitats

What role did the jack pine tree play after a wildfire?

• Its seeds were destroyed

• Its seeds spread and grew into new trees

• It did not survive

• It provided no benefit

Besides natural disasters, what else can change an ecosystem?

• Neither natural events nor human activities

• Both natural events and human activities

• Only natural events

• Only human activities

What is encouraged at the end of the video?

• To avoid forests

• To ignore ecosystem changes

• To explore a real forest ecosystem

• To only study ecosystems in books