Energy Flow
Food Chains & Webs
Ecosystems
Producers, Consumers & Decomposers
Trophic Levels & Energy Pyramids
100

This is the original source of energy for most ecosystems.

What is the sun?

100

A simple path showing energy transfer from one organism to another.

What is a food chain? 
100

All living and nonliving things interacting in an area.

What is an ecosystem? 

100

Organisms that break down dead matter.

What are decomposers?

100

The bottom of the energy pyramid always has the most of this. 

What is energy? 

200

Only about this percent of energy is passed from one trophic level to the next.

What is 10%?

200

A complex network of many food chains.

What is a food web?

200

A group of ecosystems with similar climate and organisms? 

What is a biome? 

200

A consumer that eats only plants.

What is a herbivore? 

200

This level of an energy pyramid contains plants and algae.

What are producers (first trophic level)?

300

Organisms that make their own food using sunlight are called this.

What are producers? (Autotrophs)

300

An organism that eats both plants and animals.

What is an omnivore? 

300

This biome is found in Missouri and has grasses and few trees.

What is grasslands?

300

A consumer that eats only animals.

What is a carnivore?

300

This trophic level eats producers.

What are primary consumers? 

400

This process allows plants to convert sunlight into chemical energy. 

What is photosynthesis?

400

In the chain: grass -> rabbit -> fox, this organism is the primary consumer.

What is the rabbit? 

400

This factor includes water, sunlight, and temperature.

What are abiotic factors?

400

Fungi and bacteria are examples of these.

What are decomposers? 

400

This level includes animals that eat other consumers.

What are secondary consumers?

500

Energy decreases at each level because of this lost form of energy.

What is heat (thermal energy)?

500

Arrows in a food chain show direction.

What is the flow of energy?

500

This ecosystem/biome would most likely have trees, deer, and squirrels.

What is a forest? 

500

An organism that hunts other animals for food.

What is a predator? 

500

This diagram shows how energy decreases from one level to the next.

What is an energy pyramid? 

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