Chapter 5 Voc. Quiz/ How ecosystems work

process by which carbon is cycled between the atmosphere, land, water, and organisms

• carbon cycle

• filtration

• osmosis

• wind cycle

movement of phosphorus from the environment to organisms and then back to the environment

• phosphorus cycle

• nitrogen cycle

• carbon cycle

• water cycle

the only organisms that can fix atmospheric nitrogen into chemical compounds are a few species of bacteria known as ?

• nitrogen- fixing bacteria

• bugs

• consumers

• lions

Nitrogen- fixing bacteria are a crucial part of ?

• nitrogen cycle

• phosphorus cycle

• water cycle

• carbon cycle

a sequence in which energy is transferred from one organism to the next as each organism eats another organism

• consumers

• water cycle

• food chain

• photosynthesis

each step in which energy is transferred in a food chain is known as?

• the two step

• high step

• trophic levels

• generations

A_______ shows many feeding relationships that are possible in an ecosystem.

• consumer

• magazine

• food web

• carbon cycle

The process of breaking down food to yield energy is ?

• farming

• cellular respiration

• mining

• running

Energy from the sun enters an ecosystem when a plant uses sunlight to make sugar molecules in a process called ?

• evaporation

• precipitation

• photosynthesis

• phosphorus cycle

Some consumers get their food by breaking down dead organisms and are called ?

• birds

• nitrogen cycle

• food web

• decomposers