APES Ecosystems Unit Review

Front

What is a river?

Back

A freshwater biome characterized by fast-flowing water that can originate from underground springs or runoff, carrying sediment and organic material.

Front

How much energy is available for secondary consumers if there are 3,000 Cal at the producer level?

Back

30 Cal, as energy decreases by a factor of 10 at each trophic level.

Front

What components make up an ecosystem?

Back

An ecosystem contains living and non-living components.

Front

What biome has an average temperature of 15°C and 150 cm of precipitation annually?

Back

Temperate seasonal forest.

Front

What process converts nitrates back to atmospheric nitrogen?

Back

Denitrification.

Front

Define Nitrification.

Back

The process by which ammonia is converted to nitrates by bacteria.

Front

What is Ammonification?

Back

The process of converting organic nitrogen into ammonia.

Front

What is the primary producer in an energy pyramid?

Back

Organisms that produce energy through photosynthesis, such as plants.

Front

Explain the term 'biome'.

Back

A large geographical biotic unit, a major community of plants and animals with similar life forms and environmental conditions.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil.