Energy/Trophic Levels
Abiotic Factors
Interactions
Symbiotic relationships
Ecosystems
100

The bottom level of a trophic energy pyramid with the most available energy. 

What is a producer?

100

The ultimate source of all energy in ecosystems.

What is the sun?

100

A wolf hunting and consuming a sheep.

What is predation?

100

A relationship in which both organisms benefit

What is mutualism

100

Example of ecosystem change over time

What are seasons? (More than one answer accepted)

200

The percentage of energy transferred from one trophic level to the next

What is 10%?

200

Essential for all organisms and affects where they can live.

What is water?

200

A linear sequence showing how energy and nutrients are transferred when one organism eats another

What is a food chain?

200

Fleas on dogs

What is parasitism?

200

Example of ecosystem change over space

What are lakes vs. forests? (More than one answer accepted)

300

Predators without natural predators of their own (e.g., Humans)

What is a top/apex predator?

300

Influences sunlight exposure and water drainage

What is topography?

300

Interconnected food chains showing multiple pathways for energy/matter flow

What is a food web?

300

A relationship where one organism benefits without harming the other

What is commensalism?

300

Something that restricts the growth and distribution of a population.

What is a limiting factor?

400

Breaks down dead matter and recycles nutrients

What is a decomposer?

400

Influences species survival by affecting metabolic rate and habitat stability

What is temperature?

400

All the populations of organisms living in a given place.

What is a community?

400

"Living together"

What is symbiosis?

400
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

What is a keystone species?

500

Energy that is not transferred to the next trophic level is transferred in these ways

What is heat loss, waste, or indigestible parts? 

500

Essential for plant growth and recycled by decomposers

What are nutrients?

500

A community and its environment

What is an ecosystem?

500

Interaction types that are NOT symbiotic relationships

What are competition and predation?

500

Carbon dioxide and water reacting to form sugar and water.

What is photosynthesis?

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