Vocab
Levels of Organization
Trophic Energy
Chains&Webs
BioGeoChem Cycles
100

Diet style of a consumer that only eats plants. 

What is a Herbivore?

100

The smallest unit of life. 

What is a cell?

100

Only a certain amount of the energy at one trophic level is passed to the next trophic level.

What is the 10% Rule?

100

This shows a single pathway of energy flow in an ecosystem.

What is a food chain?

100

This cycle involves the movement of carbon through the atmosphere, oceans, and living organisms via processes like photosynthesis and respiration.

What is the Carbon Cycle?

200

A group of organisms that share the same physical identity and have the ability to breed. 

What is a species?

200

Multiple families/ groups of the same species. 

What is a population?

200

As energy moves from one trophic level to the next, most of it is lost as this.

What is heat energy?

200

Multiple food chains combine to form this type of feeding relationship in an ecosystem.

What is a food web?

200

Process responsible for converting ammonia back into atmospheric oxygen. 

What is denitrification?

300

Process used by producers when converting energy. 

What is Photosynthesis?

300

The smallest unit of matter. 

What is an atom?

300

This is what each level in a trophic pyramid can be quantified by.

What is energy?

300

This type of organism makes its own food and forms the base of all food chains.

What is a producer?

300

Nutrient, which supply limits productivity. 

What is a Limiting Nutrient?

400

Classification of energy consumption for a producer; another word for producer. 

What is an Autotroph?

400

The two components (factors) of an ecosystem. 

What are biotic and abiotic factors?

400

To construct a pyramid for an ecosystem, an ecologist must measure this at each trophic level.

What is biomass?

400

In a food chain or food web, arrows represent this.

What is the transfer of energy?

400

The process responsible for converting atmospheric nitrogen into usable nitrogen (ammonia). 

What is nitrogen fixation?

500

This type of cycle describes how matter, not energy, moves repeatedly through ecosystems and the Earth.

What is a Biogeochemical Cycle?

500

All of the living factors on Earth are are contained within this area. 

What is the biosphere?

500

If a top predator is removed from a food web, this type of effect can cause major changes throughout the ecosystem.

What is a trophic cascade?

500

This is what all food chains within a food web ultimately begin with. 

What is the sun?

500

Unlike energy, this is recycled within ecosystems through biogeochemical cycles.

What is matter?