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Envir Sci 1st 9 wks
Environmental Science 1st 9 wks
Question | Answer |
---|---|
the variable plotted on the x-axis is called the | Independent veriable |
another term for technologyis | applied |
When desinging an experiment the first step is to | state a prouble |
the prcess of gathering information though the sences is called | observation |
graph temp. change over time is what temp. change | dependent variable with the large |
rule/principle in nature | scienfic law |
factor manipulated in all expementall change | independent veriable |
measure of earths gravitional pull on matter is | weight |
an explanation based on repeated observation | theory |
counting kernels is | observation |
test hypothesis | experiment |
standerd for comparison | control |
an idea event or object can be represened by a | model |
150 saquaro cactus per square kelometer | population |
range indicat | the area inhabited by population |
movement into range | immigration |
2 way population can decrease in size | decrease birth rate and emigration |
during what kind of population growth the size of each generation of offspings | exponetal growth |
growth phasw of most populations | logistic growth cure |
population-resouces start to become less | reaches carrying compasity |
not alimiting factor | drought |
reduce compotion | fewer individuals |
density dependent except | temperature |
is density independent | earthquake |
scientific study-demography | human population |
demography transition is a chaning from high birth and high death rates | low birth rate and low death rate |
simpleat groughing of greater that 1 kind of organism | community |
model of complex feeding interactions | food web |
controls growth of a population | limiting factor |
niche | role |
bird stelks. kills and eats insects; carnivore | consumer |
plants in meadow and sulfur bacteria | both produce carbs and oxygen |
one harms and one benefits | parasitism |
biotic | living |
abiotic | nonliving |
predators | lkills and eats other animals |
rain is | abiotic |
base of ecological tyramias | producer |
immigration and emmigration equal,______ could slow growth | decrease birth |
beginning of a food chain is | autotroph of producer |
3 kinds of eco. pyramids | biomass numbers and energy |
eats producers and consumers | omnivore |
reduce competin | less individuals |
plants ARE | primary producers |
camels live in the desert this is there | habitat |
branch of bio dealing with organisms and their interactions of envionment | ecology |
several species of waribles inthe same tre | different niche |
lowest level of complexity with living and nonliving factors | ecosystem |
if population grows larger than the carrying compasity, what is likely to happen | increase death rate |
water lilies do not grow indesert, because H20 is a | limiting factor |
if preditor population decrese | prey population increase |
animal feeds on plants | herbivory |
movement into range | immigration |
orgs. need nutrients in order to | carryout life functons |
animals that eat carcasses | scavengers |
imatter can be recycled because organisms | can transform it |
atoms and molecules->cells->tissues->organ->organ system->organism species->population->community->ecosystems->biospere | :D |
does not require sunlight | chemosynthesis |
hunt and killsa nd eats | predatur |
each step in a food web | trophic level |
herbis and carnis | consumeother organisms |
total amount of living tissue | diomass |