Biology Ecosystems

Front 1

transpiration

Back 1

the process by which water is lost to the abiotic parts of the biosphere from the biotic parts

Front 2

photosynthesis

Back 2

the process by which carbon dioxide in the atmosphere enters the biotic parts of the biosphere

Front 3

ecosystem

Back 3

the biological organization level an ecologist who studies how several species in an area interact among each other and with the abiotic parts of the environment is interest in

Front 4

community

Back 4

the biological organization that an ecologist who studies how several species in an area interact is interest in

Front 5

biosphere

Back 5

the combined portions of Earth in which all living things exist

Front 6

sunlight

Back 6

the original source of almost all the energy in most ecosystem

Front 7

trophic level

Back 7

each step in the transfer of energy and matter within a food web

Front 8

water cycle

Back 8

the repeated movement of water between Earth's surface and the atmosphere

Front 9

bacteria

Back 9

these carry out nitrogen fixation primarily

Front 10

niche

Back 10

the way the organism uses the range of physical and biological conditions in which it lives

Front 11

community

Back 11

a group of organisms of different speices living together in a particular place

Front 12

habitat

Back 12

a specific physical location in which a given species lives

Front 13

biogeochemical cycle

Back 13

The process in which water and minerals needed by all organisms on Earth pass back and forth between the biotic and abiotic portions of the environment

Front 14

proteins and nucleic acids

Back 14

in the nitrogen cycle, plants use nitrates and nitrites to form these.

Front 15

ecological succession

Back 15

the series of predictable changes that occurs in a community over time

Front 16

a lava flow

Back 16

primary succession can begin after

Front 17

difference between primary and secondary succession

Back 17

secondary succession begins on soil and primary succession begins on newly exposed surfaces

Front 18

density-independent factors

Back 18

limiting factors whose effects are not influenced by population densities

Front 19

the number of bacteria per square millimeter

Back 19

example of population density

Front 20

limiting factor

Back 20

a biotic or an abiotic resource in the environment that causes population size to decrease

Front 21

rock lichens

Back 21

area that is in the early stages ofprimary succession will typically contain these

Front 22

decreases

Back 22

as matter and energy move from grasses to coyotes, the amount of available enery will do this

Front 23

smaller animal to larger animal

Back 23

energy flow this direction

Front 24

species make up population, which make up communities

Back 24

Describes the organization of an ecosystem

Front 25

movements of energy and nutrients through living systems are different because

Back 25

energy flows in one direction and nutrients recycle

Front 26

soil type, rainfall, temperature

Back 26

abiotic factors

Front 27

number and kinds of predators in the ecosystem

Back 27

biotic factor that affects the size of apopulaltion in a specific ecosystem

Front 28

community of organisms, energy, soil, water and weather

Back 28

parts of an ecosystem

Front 29

producers

Back 29

the photosynthetic algae

Front 30

leopard seals

Back 30

carnivores

Front 31

killer whales

Back 31

among all of the food chains, the organisms at the highest trophic level

Front 32

zones of tolerance and intolerance

Back 32

fish reproduce when the tank water is slightly alkaline. Then they stop if the water becomes acidic or if the water becomes too alkaline