unit 7, populations Flashcards
populatoion?
group of organisms of the same species living in the same habitat
habitat?
part of an ecosystem which a particular organism lives in
coomunity?
populations of different species in the same place at the same time
ecosystem?
a community and the abiotic and biotic factors
niche?
an organisms role in an ecosystem and their position in the food webw
what happens if there is two organisms in the same niche?
they compete
carrying capacity?
max population that an ecosystem can hold
abiotic factors? give examples
non living conditions
-temperature, ph , soil conditions, co2 , o2 , light intensity
an example of a harsh ecosystem?
sand dunes at beach, lots of light, no water, high salt concentration from water in ocean
an example of less harsh ecosystem?
rainforest
-lots of light, lots of water
biotic factors?
living factors, competition, how components of an ecosystem interact together
what is interspecific competition?
-members of DIFFERENT species compete with each other for food, water, habitat, niche
what is intraspecific competition?
members of SAME species are competing with eachother for same resources
why does prey levels always peak higher than predator levels?
-predators need to eat multiple prey as are further along the food chain so they are consuming less energy
