ecology
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definition of commensalism
members of one species gain benefits while those of the other species neither benefit nor are harmed
deifinition of competition
the direct or indirect interaction of organisms that leads to a change in fitness when the organisms share the same resource.
definition of mutualism
a type of symbiotic relationship where all species involved benefit from their interactions.
definition of parasitism
one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death.
definition of predation
one organism capturing adn eating another
where is biomass greatest?
producers
definition of omnivore
eats both plants and animals
definition of herbivore
only eats plants
definition of carnivore
only eats meat
definition of detrivore
feeds on dead decomposing organic matter
Wind is considered to be an abiotic factor because it
is a non living thing
why is a moose considered to be a consumer?
gets energy by eating other resources
food wes are models that show?
network of feeding relationships
all enironmental in the area where an organism lives are known as
habitat
Aphids eat the sap from plants and excrete sticky waste that ants eat. The ants protect the aphids from predators. This type of interaction is called
mutualism
secondary succession is most likely to occur after
a forest fire
what about primary succession is true?
it begins with bare rock
The two finches in Figure 13.2 have two different shapes of beaks. One has a large beak and eats nuts and seeds. The other finch has a long beak that it uses to pick insects off tree bark. Which of the following statements is true?
2 finches have traits that allow them to eat different
what provides the most energy in ecosystems?
producers
what can be both primary and secondary consumers?
omivores
what best desribes an ecosystem?
all of the abiotic and biotic facts living in a given area
A group of emperor penguins living together on a particular beach is an example of a(n
population
Zebras live on the savannas of Africa. A watering hole on the savanna would be part of a zebra’s
habitat
The reestablishment of a damaged ecosystem in an area where the soil is intact is called
secondary succession