Biology Chapter 16 Review

A group of organisms of different species living together in a particular place is called a 

Level A is composed of

Ecologists call the physical location of a community its habitat.

When an organism dies, the nutrients in its body are put back its environment by decomposers.

In a food web, which type of organism receives energy form every other type.

Coal, oil, and natural gas

The number of species living within an ecosystem is a measure of its biodiversity.

Biodiversity measures the number of species living within a(n)

Ernst Haeckel coined the term ___ to describe the study of how organisms react.

Animals that feed on plants are at least in the

Organisms that manufacture organic nutrients for an ecosystem are called

A functioning aquarium displays

At each trophic level, the energy stored in the organisms in that level is

Fungi are

A relationship between a producer and consumer is best illustrated by a

How much energy is available to the organisms in level C?

An organism that eats a primary consumer is called a(n) ___ consumer.

The term ___ is given to the bacteria that break down dead tissue.

Which of the following types of succession would most likely occur following a forest fire?

Transpiration is a sun-driven process.

In an ecosystem, ___ diminishes at each successive trophic level.

Water that seeps into the soil is called ___ water.

Animals known as ___ eat only primary producers.

The living organisms in a habitat are called ___ factors.

An ecosystem consists of

A forest was turned into a field but the trees grew back. This is called

All organisms in an ecosystem are part of the food web of that ecosystem

Humans are affecting the carbon cycle by

The source of energy for an organism determines its trophic level.

A community includes all the species within an area.

Food chains usually begin with the primary producers.

An energy pyramid shows energy contained in the bodies of organisms at each ___ level.

Nitrogen makes up about 79 percent of the Earth's atmosphere

The diagram, which shows how energy moves through an ecosystem is known as

The diagram represents the decrease in

Nitrogen is a component of 

Trophic levels = a group of organisms whose energy sources are the same level away from the sun

The number of species living within an ecosystem is a measure of its ___.

When succession takes place in an area with previous growth, it is called secondary succession.

Leopard seals are

The physical location of an ecosystem in which a given species lives is called

Everything that organisms do in ecosystems requires ___.

The primary producers in a grassland ecosystem would be

Which of the following are detritivores?

Organisms at higher trophic levels tend to be fewer in number than lower trophic levels.

Killer whales feed at the