Ecosystems
Energy
Relationships
Cycles
100

The living components of an ecosystem are called this.

What are biotic factors?

100

Organisms that make their own food using sunlight.

What are primary producers?

100

A relationship where both species benefit. Ex: Bees and flowers

What is mutualism?

100

This cycle involves the movement of ___ through evaporation, condensation, and precipitation.

What is the hydrologic (water) cycle? 

200

Nonliving components like water, sunlight, and temperature are known as these.

What are abiotic factors?

200

The process plants use to convert sunlight into energy.

What is photosynthesis?

200

A relationship where one benefits and the other is harmed.

What is parasitism?

200

The process that releases carbon dioxide back into the atmosphere from organisms.

What is cellular respiration?

300

A group of organisms of the same species living in one area.

What is a population?

300

Organisms that break down dead organic matter.

What are decomposers?

300

A relationship where one benefits and the other is unaffected.

What is commensalism?

300

The process by which bacteria convert atmospheric nitrogen into a usable form for plants.

What is nitrogen fixation?

400

A group of interacting populations in a specific area.

What is a community?

400

Only about this percentage of energy transfers to the next trophic level.

What is 10%?

400

When two species compete for the same limited resource.

What is competition?

400

The primary reservoir of carbon on Earth is found here.

What are the oceans?

500

The role or position a species has in its environment.

What is a niche?

500

A diagram that shows energy loss between trophic levels.

What is an energy pyramid?

500

When one organism hunts and eats another.

What is predation?

500

This element is essential for proteins and DNA and is often a limiting nutrient in ecosystems.

What is Nitrogen?