Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
What is the principal source of energy input to biological systems?
|
The Sun
|
|
|
Define the term "food chain".
|
A chart showing the flow of energy (food) from on organism to the next beginning with a producer.
|
|
|
Define the term "food web".
|
A network of interconnected food chains showing the energy flow through part of an ecosystem.
|
|
|
Define the term "producer".
|
An organism that makes its own organic nutrients, usually using energy from sunlight, through photosynthesis.
|
|
|
Define the term "consumer".
|
An organism that gets its energy by feeding on other organisms.
|
|
|
Define the term "herbivore".
|
An animal that gets its energy by eating plants.
|
|
|
Define the term "carnivore".
|
An animal that gets its energy by eating other animals.
|
|
|
What is the energy loss between trophic levels?
|
90% of the energy is lost.
|
|
|
Define the term "decomposer".
|
An organism that gets its energy from dead or waste organic matter.
|
|
|
Define the term "ecosystem".
|
A unit containing all of the organisms and their environment, interacting together, in a given area.
|
|
|
Define the term "trophic level".
|
The position of an organism in a food chain or food web.
|
|
|
How many trophic levels to food chains have?
|
Food chains usually have fewer than five trophic levels, because there is usually a producer, a herbivore, a small carnivore, and then a top carnivore.
|
|
|
Define the term "carbon cycle".
|
"A combined process, inclincluding photosynthesis, decomposition, and respiration, by which carbon as a component of various compounds cycles between its major reservoirs the atmosphere, oceans, and living organisms."
http://www.thefreedictionary.com/carbon+cycle |
|
|
Describe the effects of the combustion of fossil fuels and the cutting down of forests on the oxygen and carbon dioxide concentrations in the atmosphere.
|
The carbon dioxide level will increase, and the oxygen level will decrease. The trees will not use up the carbon dioxide anymore to produce more oxygen.
|
