Unit 10 test Flashcards
(26 cards)
what is exponential growth
explosive population growth
what is logistic growth
population growth slowed down by limiting factors
what are some limiting factors
food/water availability
space
hunters
what are density dependent factors
factors associated with population
what are examples of density dependent factors
competition
lack of food
what are density independent factors
factors that affect population regardless of population size
what are examples of density independent factors
temperature
natural disasters
what is a community
all populations living in area capable of interacting with each other
what is symbiotic relationship
interaction between 2 or more species in direct contact
paratism
one organism is benefited while the other is harmed
commensalism
one organism is benefited while the other is neither harmed or helped
mutualism
both organisms are benefited
what is food chain
feeding relationships in a community
what is food web
all feeding relationships within an ecosystem
how much energy is passed from 1 level to the next
10%
what is population
group of individuals of the same species
what is the order of the food pyramid
producer - plants
primary - insects
secondary - mouse, frog
tertiary - snakes, owl
quaternary - eagle
what are limiting factors
factors that are in a population that control population growth
what is a calorie
the amount of energy required to raise the temp of 1g of water by 1 degree
what is endo/exo thermic
endothermic takes energy in, exothermic releases energy
what is combustion
fossil fuels are burned releasing carbon dioxide
what is nitrate
a type of compound with oxygen
what is nitrogen fixation
the process of converting nitrate into something plants/animals can use
what is decomposition
when plants/animals break down the nitrogen into ammonia
