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Chapter 3
Biosphere
17
Biology
10th Grade
09/29/2008

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Term
Ecology
Definition
interactions with organisms and their environment
Term
biosphere
Definition
all of life's existence
(land, water, air, &atmosphere)
Term
What are the levels of organization?
(Smallest-Largest)
Definition
individual, population, community, ecosystem, biome, biosphere
Term
species
Definition
group of organisms similar to each other that is able to produce an offspring
Term
populations
Definition
groups of individuals that are the same species and live in the same area
Term
communities
Definition
different populations living together in an area
Term
ecosystem
Definition
collection of organisms living in a particular place, either nonliving, or physical environment
Term
biome
Definition
group of ecosystems with the same climate and similar communities
Term
What are the 3 basic approaches to conduct modern ecological?
Definition
observing, experimenting, modeling
Term
What is the main source of energy for life on Earth?
Definition
sunlight
Term
How does energy flow in an ecosystem?
Definition
one-way
Term
autotrophs
Definition
producers
Term
heterotrophs
Definition
consumers
Term
How much energy is available in one trophic level that is transferred to the next trophi level?
Definition
10%
Term
How does matter's energy flow?
Definition
recycled within and between ecosystems
Term
What is the role of nutrients in living organisms?
Definition
builds tissues and carries out essential life functions
Term
How are nutrients passed?
Definition
between organisms and the environment through biogeochemical cycles
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