Food Chains & Webs
Organisms at the bottom of every food chain that make their own food
Producers
the process in which a liquid turns into a gas
vaporization: in this case evaporation
An organism that hunts & kills other organisms for food
predator
Factor that causes a population to stop growing or decrease
limiting factor
Type of succession that occurs in an area that does not have soil or any previous life
primary succession
Organisms that eat other organisms for nutrients & energy
Consumers
the process in which a gas turns into a liquid
condensation
this occurs when members of two populations or members within the same population fight for resources
competition
Some examples of limiting factors are... (at least 3)
water, food, space, weather
a species that begins primary succession by breaking down rocks into soil
pioneer species
The arrows in a food chain or food web show the transfer of
matter and energy
condensed water that falls back to the earth from the atmosphere
precipitation
an ecological relationship in which both organisms benefit
mutualism
A population of snakes in the desert begins to decrease because the mice population is being eaten by hawks. What is the limiting factor?
Food
type of succession that occurs in an area that has soil and has previously support life
secondary succession
Grasshoppers eat grass. If there is an increase in the grasshopper population, the grass is likely to...
decrease
water that flows from high elevations back to the ocean
surface run off
an ecological relationship in which one organism benefits and the other is harmed
parasitism
the maximum amount of organisms that an ecosystem can support without losing resources
carrying capacity
An example of an ecological disturbance that would cause primary succession
volcano
Lions eat gazelles and gazelles eat tall grasses. What is most likely to happen to the lion population if the tall grasses are being eaten by another grazing population?
decrease or switch
the process through which water is released from plants back to the atmosphere
transpiration
an ecological relationship in which one organism benefits and the other is unaffected
commensalism
Climate change is heating the Earth's poles and melting glaciers. Polar Bear populations are decreasing due to the change in the climate of their habitat. What is the limiting factor?
Weather
An example of an ecological disturbance that would cause secondary succession..
fire