b16: adaptations and interdependence Flashcards
(16 cards)
what is a population
total number of organisms of the same species that live in a specific geographical area
what is a community
group of 2 or more populations of different species living in a specific geographical area
what is a ecosystem
the interaction of a community of living organisms with the non-living parts of their environment
what is competition
contest between organisms within a community for recourses
what is interdependence
when species in a community depend on others for resources and shelter
what do animals often compete for
food
mates
territory
what do plants often compete for
light
space
water
mineral ions
what is an abiotic factor
non-living factor that can affect a community
list the 7 abiotic factors that an affect a community
- C02 levels for plants
- light intensity
- moisture levels
- oxygen levels for animals that live in water
- soil pH and mineral content
- temperature
- wind intensity
what is a biotic factor
living factor that can affect a community
list the 4 biotic factors that can affect a community
- availability of food
- new predator’s
- new pathogens
- competition between species
what is a stable community
when all species and environmental factors are in balance, so population sizes remain fairly constant
how do adaptations help an organism
they enable the organism to survive in the condition it lives in
what are 3 types of adaptations
- structural
- behavioral
- functional
what is an extremophile
an organism that lives in a very extreme enviroment
what makes an environment extreme
- very high or low temperatures
- extreme pressure
- high salt concentrations
- highly acidic or alkaline conditions
- lack of oxygen or water
