Ecosystem Dynamics and Interactions

In this lesson, Miss Free teaches about the movement of matter and energy through ecosystems. The video covers key vocabulary such as decomposers, food chains, invasive species, and scavengers. It explains the components of ecosystems, distinguishing between biotic and abiotic elements. The lesson details how energy flows from the sun to producers and through various consumers, ending with decomposers. The video concludes with a call to action for students to engage with assignments on Google Classroom.

What is the main focus of today's lesson?

• The history of ecosystems

• The life cycle of a butterfly

• The water cycle

• How matter and energy move through an ecosystem

Which of the following best describes a decomposer?

• An organism that produces its own food

• An organism that breaks down dead material

• An organism that disrupts ecosystems

• An organism that consumes plants

What is a food web?

• A single chain of energy transfer

• A group of overlapping food chains

• A network of water cycles

• A diagram of plant growth

What is an invasive species?

• An animal that feeds on plants

• A native organism that supports the ecosystem

• A non-native organism that disrupts the ecosystem

• A plant that grows rapidly

Which of the following is considered a scavenger?

• A secondary consumer

• A plant that produces its own food

• An animal that feeds on dead organisms

• A primary consumer

What are biotic components of an ecosystem?

• Chemical elements like oxygen

• Living things like plants and animals

• Nonliving things like rocks and water

• Energy sources like sunlight

Which of the following is an abiotic component?

• Plants

• Animals

• Sunlight

• Bacteria

Where does all energy in an ecosystem originate?

• The Moon

• The Sun

• The Earth

• The Ocean

What role do producers play in the food chain?

• They decompose dead organisms

• They disrupt the ecosystem

• They create their own food using sunlight

• They consume primary consumers

What happens to energy when a secondary consumer dies?

• It becomes abiotic

• It returns to the Sun

• It is lost forever

• It is transferred to decomposers