Limiting Factors
What is carrying capacity?
The maximum population size of a species that a given ecosystem can sustain
What is it called when one individual feeds on another
Predation
What are dominant species?
Species that are so abundant that they have the biggest biomass of any community member.
What is pollution?
Toxic substances released into the environment and affect land, water, and air
What kind of rain is caused by pollution
Are animals biotic or abiotic?
Biotic
What is it called when two individuals seek the same resource (space, food, water, light)
Competition
What is a community?
A community is all the populations of the different species that interact in a specific area or ecosystem.
What is overexploitation?
The use or extraction of a resource until it is depleted.
_______ forest ecosystems provide us with valuable resources.
Natural
Is sunlight biotic or abiotic?
Abiotic
What is symbiosis?
Interaction between members of two different species that live together in a close association.
What is biodiversity?
The number and variety of organisms found within a specific region
What is a pesticide?
A substance used to kill a pest. There are different pesticides depending on the pest
Canada is a _____ source of wood
large
Name one biotic limiting factor.
competition, mutualism, commensalism, parasitism, predation
Which type of symbiosis helps both organisms?
Mutualism
True or False:
Keystone species are generally not abundant, and they can be plants or animals.
True
Name two factors of extinction
Climate change
Pressure of competition
New species introduce
HUMANS
Decrease in available habitat
Chemicals
Hunting
Global warming
Logging, oil exploration, expanding cities
What is fragmentation?
Breaking once large ecosystems into smaller ecosystems
What is exponential growth?
Term for an accelerating growth that produces a J-shaped curve when the population is graphed over time
How many types of symbiosis are there?
What is a sustainable ecosystem?
An ecosystem capable of withstanding pressure and giving support to a variety of organisms.
Name 3 effects of acid precipitation in humans
Can cause asthma and other respiratory problems
Can cause cars and iron structures to rust faster
Can damage statues and buildings made of concrete and marble
Cause billions of dollars in medical and economic costs each year
What % of our original forests have been cut out once
60%