Food Chains and Ecosystem Dynamics

This video tutorial provides a comprehensive review of unit 11, covering key vocabulary, ecosystem dynamics, decomposition rates, and agricultural practices. It explains the importance of photosynthesis, food webs, and energy transfer in ecosystems. The tutorial concludes with advice on preparing for the final unit test.

What is the term used for using less of something to make it last longer?

• Recycling

• Sustainability

• Conservation

• Preservation

Which material decomposes the fastest in saltwater?

• Plastic bottle

• Aluminum can

• Paper towel

• Glass bottle

What is the most likely reason for fish dying in a stream near a factory?

• Increased insect population

• Decreased water level

• Construction of a new bridge

• Release of warm water

What is the term for animals moving to different areas during certain times of the year?

• Adaptation

• Hibernation

• Migration

• Evolution

Why do plants need sunlight?

• To attract pollinators

• To absorb water

• To perform photosynthesis

• To produce oxygen

In a food chain, what is the correct sequence of energy flow?

• Consumer -> Producer -> Decomposer

• Decomposer -> Producer -> Consumer

• Producer -> Decomposer -> Consumer

• Producer -> Consumer -> Decomposer

Which animal in a grassland food chain is a carnivore?

• Horse

• Cricket

• Snake

• Rabbit

During which season do maple tree leaves change from green to orange?

• Winter

• Fall

• Summer

• Spring

In a food web, which organism is typically the last link?

• Herbivore

• Producer

• Consumer

• Decomposer

Why are decomposers considered the last link in a food chain?

• They break down waste and dead organisms

• They consume sunlight

• They are at the top of the food chain

• They produce energy