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Bio EOCT Domain IV

Review of EOCT content for ecology

study of the interactions between living things and the environment ecology
all organisms and the environments in which they live; all places on earth that supports life biosphere
all the living things in an environment biotic factors
all the nonliving things in an environment abiotic factors
organisms of the same species in a given area population
a collection of populations that interact with each other in a given area community
all the biotic and abiotic factors in a given area ecosystem
a collection of ecosystems sharing similar vegetation and climate biome
number of organisms of the same species living in a given area population density
population growth under ideal conditions exponential
J-shaped curve of population growth exponential
population growth when there are limiting factors logistic
S-shaped curve of population growth logistic
maximum size of a population that an environment can support carrying capacity
when the death rate is equal to the birth rate zero population growth
type of limiting factor based on the size of the population Examples- competition, overcrowding, food and water resources density-dependent
type of limiting factor where the size of the population has no effect Examples- flooding or fire density-independent
the role or job an organism has in the environment niche
place where an organism lives habitat
ecosystems on land terrestrial
ecosystems in the water aquatic
biome with permafrost, very cold, basically treeless, arctic fox and snowy owl tundra
biome with large coniferous trees, acidic soil, black bear and wolves taiga
biome with frequent rain, found near equator,temperature near 80 F toucans, monkeys, parrots tropical rain forest
biome can be hot or cool, very little rainfall, camels,jackrabbit, many reptiles, cacti desert
biome with uneven rainfall, many grasses and small plants, many grazing herbivores: bison, antelope grasslands
biome with 4 seasons, rabbits, squirrels, birds, trees lose leaves in winter temperate deciduous forest
ultimate source of energy in an ecosystem sun
organisms in an ecosystem that harness the sun's energy to make food molecules producers or autotrophs
organisms in an ecosystem that eat other organisms to obtain energy consumers or heterotrophs
organisms that feed on dead organisms decomposers
shows how energy flows in an ecosystem food chain
a step or feeding level on a food chain trophic level
all the possible feeding relationships in an ecosystem food web
feeds on producers in a food chain primary consumer
feeds on herbivores secondary consumer
amount of energy passed on to each trophic level 10%
energy ____________ through an ecosystem flows
matter ____________ through an ecosystem recycles
form carbon is found in the atmosphere carbon dioxide
percentage of nitrogen in the atmosphere 78%
bacteria do this to make nitrogen accessible for plants to make proteins nitrogen fixation
How is carbon dioxide in the atmosphere used by plants to make sugars? photosynthesis
How is carbon returned to the atmosphere in the carbon cycle? respiration, decomposition, burning fossil fuels
the natural changes that take place in an ecosystem over time succession
the gradual changes in an ecosystem where no life has existed before; from bare rock primary succession
type of succession after a volcano primary succession
organisms that first inhabit an area pioneer organisms
examples of pioneer organisms mosses and lichen
changes after a natural disaster or human activity partially destroys an environment secondary succession
type of resource that is replaced by natural processes renewable
type of resource that is only present in limited amounts nonrenewable
the contamination of air, soil, or water from human activity pollution
primary cause of air pollution burning of fossil fuels to produce electricity
solids in the air that can have a negative effect on living things; soot particulates
a combination of smoke, gases, and fog smog
sulfur oxides in the atmosphere that mix with water vapor in the clouds which damages crops and harms living things in aquatic environments acid rain
carbon dioxide traps heat from the sun warming the Earth greenhouse effect
excess heat from the greenhouse effect causing temperatures to rise on the earth global warming
ozone layer that prevents harmful UV rays from sun reaching the earth is broken down by these CFC's Cholofluorcarbons
response of a plant seedling to gravity geotropism
response of a plant seedling to water hydrotropism
response of a plant seedling to light phototropism
response of a plant seedling to touch thigmotropism
This is when a toxin is added to the environment and it increases in concentration in each organism as it moves up the food chain biomagnification
Created by: elaineconklin