Cycling of Matter Review

Front

Organisms at the top of a food chain or web are ________.

Back

Predators are organisms that are at the top of a food chain or web, feeding on other organisms.

Front

As you move up an energy pyramid, energy __________ by 90% because it is lost to heat.

Back

Decreases - As energy moves up the energy pyramid, approximately 90% of the energy is lost as heat, leaving only about 10% available for the next trophic level.

Front

The ____ Rule refers to the amount of energy that is transferred to the next trophic level.

Back

10% Rule - This rule states that only about 10% of the energy from one trophic level is transferred to the next level.

Front

Land is part of which sphere?

Back

Lithosphere - The lithosphere refers to the solid outer part of the Earth, including land.

Front

Which element is NOT found in the atmosphere?

Back

Phosphorus - While carbon and nitrogen are found in the atmosphere, phosphorus is not.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem.

Front

Define producers in an ecosystem.

Back

Producers are organisms, like plants, that create their own food through photosynthesis and serve as a food source for consumers.

Front

What role do consumers play in an ecosystem?

Back

Consumers are organisms that cannot produce their own food and rely on eating other organisms for energy.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.