Ecology

Front

What is the original source of almost all energy in most ecosystems?

Back

Sunlight

Front

Autotrophs make up the _______ level in all ecosystems.

Back

First

Front

An organism that produces its own food supply from inorganic compounds is called a(an) __________.

Back

Autotroph

Front

A system comprising all the biotic and abiotic factors in an area and all the interactions among them is called an __________.

Back

Ecosystem

Front

As you move upward, from level to level, in an energy pyramid, energy __________.

Back

Decreases

Front

What are the two main types of organisms in an ecosystem?

Back

Autotrophs and Heterotrophs

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

Define 'biome'.

Back

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

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 the difference between a food chain and a food web?

Back

A food chain is a single pathway of energy flow, while a food web consists of multiple interconnected food chains.