Unit #1 Review B

Front

What is the lowest concentration of chemical pollutants found in a food web?

Back

Producers contain the lowest concentration of chemical pollutants.

Front

What is a pioneer species?

Back

A pioneer species is an organism that colonizes an area where no other living thing exists, starting a cycle of ecological succession.

Front

What does biodiversity refer to?

Back

Biodiversity refers to the variety of all living organisms in the biosphere.

Front

What is biomagnification?

Back

Biomagnification is the phenomenon where toxins concentrate in organisms at higher trophic levels within an ecosystem.

Front

Which organisms have the most energy available in an energy pyramid?

Back

Producers have the most energy available in an energy pyramid.

Front

What is the role of producers in an ecosystem?

Back

Producers convert sunlight into energy through photosynthesis, forming the base of the food web.

Front

Define primary consumers.

Back

Primary consumers are organisms that eat producers; they are typically herbivores.

Front

What is the difference between a biome and a niche?

Back

A biome is a large ecological area with distinct climate and organisms, while a niche is the role or function of an organism within its ecosystem.

Front

What is ecological succession?

Back

Ecological succession is the process by which ecosystems change and develop over time, often following a disturbance.

Front

What is the significance of nitrogen fixation?

Back

Nitrogen fixation is the process of converting nitrogen gas from the atmosphere into a form usable by living organisms, essential for plant growth.