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bioaccumulation when an individual continues to eat food contaminated with toxins
bioamplification when toxins are passed on through the different trophic levels the toxin is more concentrated
how much energy is passed on to the next trophic level in the food chain 10%
biodiversity the number and variety of a species in a region
why is biodiversity important more resiliant to stresses
threats to biodiversity introducing alien species because they take over the habitat of native species
2 ways atmospheric gas is converted to a usable form lightning and decomposition
how is nitrogen returned to the atmosphere dentrification
2 ways of how human activity is increasing the levels of carbon dioxide released in the atmosphere burning fossil fuels and clear cutting forests
name one ecosystem service and 2 examples provisioning-wood and cotton
dentrification the process which converts nitrates back to atmospheric nitrogen gas
what is a restoration method? Explain reforestation is regrowth of a forest either through natural process or planting seeds
carrying capacity the maximum number of individuals of a species that can be supported indefinitely by the ecosystem
density refers to the number of organisms in an area
3 ways that carbon dioxide is released into the atmosphere respiration, volcanic eruptions and combustion
photosynthesis chemical equation 6CO2+6H2O+sunlight-6O2+C6H12O6
cellular respiration chemical equation 6O2+C6H12O6-6CO2+6H2O+energy
predation one organism consumes another
competition two or more organisms compete for the same resources such as food, space and water
symbiosis interactions between members of two different species that live in close association
symbiotic relationships mutualism, parasitism and commensalism
mutualism when both organisms benefit from the relationship
parasitism when one benefits from the relationship and the other is harmed
commensalism occurs when one species benefits from the relationship and without harm or benefit to the other species
one way to measure biodiversity netting
netting the use of nets to capture specific species of organisms and then the organisms are released after sampling
first trophic level primary producers
second trophic level primary consumers
third trophic level secondary consumers
fourth trophic level tertiary consumers
fifth trophic level top consumer
atmosphere air
lithosphere land
hydrosphere water
biosphere life
ecosystem consists of all living organisms that share a region and interact with each other and their non-living community
what is a sustainable ecosystem one that is capable of withstanding pressure and giving support to a variety of organisms
biotic all living or recently living parts of the ecosystem
abiotic all the non-living parts of the ecosystem that organisms need to survive
photosynthesis the conversion of solar energy into chemical energy which is food
cellular respiration provides energy for the cell
trophic levels categories of organisms
how much energy is passed out as waste 60%
how much energy is used for movement and heat 30%
the solid part of the earths surface is called the lithosphere
oxygen is required by almost all organisms for this process cellular respiration
cellular respiration is a by-product of photosynthesis
what refers to all water on the earth in solid, liquid and gas state hydrosphere
what is an ecosystem that can continue to function over very long periods of time a sustainable ecosystem
the population that an ecosystem can support continuously is called its carrying capacity
what describes a community of living things and their surrounding physical environment ecosystem
when non-native species out compete native species, it's called competition
some pesticides and other environmental toxins build up or amplify in living organisms
what is a large concentration of a single species growing in one area population
organism individual
population many organisms of one species living in an area
community many different populations living in one area
Created by: syddj123



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