Communities and Populations Flashcards
community
groups of populations living in the same area
Populations
a group of organisms that live in a specific area
limiting factors
any biotic/abiotic factors that restricts the existence, reproduction, or distribution of organisms.
Examples of limiting factors:
food, weather, water, and shelter
Range or Tolerance
the ability of an organism to withstand fluctuations in biotic and abiotic factors.
Do organisms need to change?
yes, in order to survive
What are the two natural changes to an ecosystem?
Primary and Secondary Succession
Which of the two successions takes place where there was originally nothing living ? example: a volcanic island.
Primary
Which of the two successions is an environment disaster? examples: forest fire, flood, tornado.
Secondary
What are the two shaped Growth graphs?
“S” and “J” shaped growth
of organisms of one species that an environment can support idefinitly
carrying capacity
Reproduce a lot :
rapid
Reproduce few, live long lives
short
Competition, predators, disease -
Density Dependent:
natural disasters -
Density independent:
