9Th Grade Biology Chapter 3

Front 1

ecology

Back 1

the study of interactions among organisms

Front 2

biosphere

Back 2

contains the combined portions of the planet in which all of life exists

Front 3

species

Back 3

is a group of organisms so similar they can breed

Front 4

population

Back 4

groups of individuals

Front 5

community

Back 5

is a group of different species

Front 6

ecosystem

Back 6

is a collection of all the organisms that live in a particular place

Front 7

biome

Back 7

is a group of ecosystems thtat have the same climate and similar dominat communities

Front 8

autotroph

Back 8

use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules

Front 9

photosynthesis

Back 9

using the sun to create food

Front 10

chemosynthesis

Back 10

organisms use chemical energy to produce carbiohydrates

Front 11

consumer

Back 11

organisms that rely on other organisms for their energy and food

Front 12

carnivore

Back 12

eat both plants and animals

Front 13

detritivore

Back 13

eat dead stuff

Front 14

food chain

Back 14

the transfer on energy

Front 15

trophic level

Back 15

each step in the food chair

Front 16

ecological pyramid

Back 16

diagram that shows the relative amounts of energy contained within each trophic level

Front 17

biogeochemical cycle

Back 17

elements r passed from one oranism to the another

Front 18

evaporation

Back 18

the process in which water turns to a gas

Front 19

transpiration

Back 19

the process in which a gas turns to water

Front 20

nutrient

Back 20

all chemical substances that an organism needs to sustain life

Front 21

nitrogen fixation

Back 21

when lagumes convert nitrogen gas into ammonia

Front 22

denitrification

Back 22

other soil bacteria convert nitrates into nitrogen gas

Front 23

primary productivity

Back 23

the rate at which organic matter is created by producers

Front 24

limiting nutrient

Back 24

when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly

Front 25

algal bloom

Back 25

when an aquatic ecoststem receives a large input of a limited nutrient, this results in an increase in the amount of algae