d687-unit 4 life science powerpoint.ppt

8/9/2019 D687-Unit 4 Life Science Powerpoint.ppt

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Interactions AmongInteractions Among

Living ThingsLiving ThingsChapter 3 of CPO TextChapter 3 of CPO Text

Focus on Life ScienceFocus on Life Science


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Introduction to the LessonIntroduction to the Lesson

http://!"rainpop!com/science/popu#athttp://!"rainpop!com/science/popu#at

ionsandecos$stems/ecos$stems/ionsandecos$stems/ecos$stems/
http://www.brainpop.com/science/populationsandecosystems/ecosystems/http://www.brainpop.com/science/populationsandecosystems/ecosystems/http://www.brainpop.com/science/populationsandecosystems/ecosystems/http://www.brainpop.com/science/populationsandecosystems/ecosystems/http://www.brainpop.com/science/populationsandecosystems/ecosystems/http://www.brainpop.com/science/populationsandecosystems/ecosystems/


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T$pes of %a"itatsT$pes of %a"itats

Land %a"itatLand %a"itat

&ater %a"itat&ater %a"itat
http://www.aquaworldaquarium.com/GeneralCare/Gen_Care_Images/saltwater_fish/Saltwater_Fish_600px.jpghttp://www.natural-history-pictures.co.uk/mirrorsmall.jpghttp://images.google.com/imgres?imgurl=http://www.ignorancia.org/uploads/experiments/desert/desert-7.jpg&imgrefurl=http://www.ignorancia.org/en/index.php%3Fpage%3DDesert&h=768&w=1024&sz=333&hl=en&start=2&um=1&tbnid=kvmtXmhRAMlWPM:&tbnh=113&tbnw=150&prev=/images%3Fq%3Ddesert%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1T4TSHB_en___US225%26sa%3DGhttp://images.google.com/imgres?imgurl=http://www.desktopscenes.com/Autumn%2520Scenes%2520from%2520Southern%2520Vermont%2520(2003)/Rocky%2520Forest%2520Path.jpg&imgrefurl=http://www.desktopscenes.com/Autumn%2520Scenes%2520from%2520Southern%2520Vermont%2520(2003)/slides/Rocky%2520Forest%2520Path.html&h=600&w=800&sz=275&hl=en&start=5&um=1&tbnid=XTLoy0j5kgpuCM:&tbnh=107&tbnw=143&prev=/images%3Fq%3Dforest%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1T4TSHB_en___US225%26sa%3DG


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'cos$stems and %a"itats'cos$stems and %a"itatsLiving S$stemsLiv

ing S$stems

made up of ce##s ( tissues ( organs) organmade up of ce##s ( tissues ( organs) organs$stems) organisms$stems) organism hashas structurestructure*its parts+ and*its parts+ and

functionfunction *hat it does+*hat it does+

'cos$stem'cos

$stem higher #eve# of organi,ation a"ove organismshigher #eve# of organi,ation a"ove organisms -ade up of group of #iving things and their-ade up of group of #iving things and their

surroundings! 'x! .iosphere or a drop of atersurroundings! 'x! .iosphere or a drop of ater

%a"itat%a"itat a p#ace here a particu#ar organism #ivesa p#ace here a particu#ar organism #ives

e!g! ocean is ha"itat of do#phine!g! ocean is ha"itat of do#phin

fish"o# is ha"itat of a pet go#dfishfish"o# is ha"itat of a pet go#dfish


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Ph$sica# aria"#es *A"iotic Factors+Ph$sica# aria"#es *A"iotic Factors+

in Land %a"itatsin Land %a"itats *comp#ete $our organi,er+*comp#ete $our organi,er+

Temperature-Temperature- most #iving things can survive inmost #iving things can survive in

temperatures a"ove free,ing and "e#o 012Ctemperatures a"ove free,ing and "e#o 012C

Precipitation-Precipitation-#iving things need ater to#iving things need ater to

survive amount of precipitation determines thesurvive amount of precipitation determines the4inds of #ife that can survive in a #and ha"itat4inds of #ife that can survive in a #and ha"itat

Sunlight-Sunlight-provides energ$ for #iving things toprovides energ$ for #iving things to

gro and survive amount of sun#ight determinesgro and survive amount of sun#ight determinesthe amount of energ$ avai#a"#e in an ecos$stemthe amount of energ$ avai#a"#e in an ecos$stem


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inin Land HabitatsLand Habitats continuedcontinued

Type of SoilType of Soil

soi# is a mixture of deca$ed p#ant and anima#soi# is a mixture of deca$ed p#ant and anima#

parts and ver$ sma## roc4 partic#es t$pe of soi#parts and ver$ sma## roc4 partic#es t$pe of soi#varies in different #and ha"itats soi# is a ha"itatvaries in different #and ha"itats soi# is a ha"itat

for some organismsfor some organisms

Oxygen-Oxygen- most organisms need ox$gen to #ivemost organisms need ox$gen to #ive

amount of ox$gen in air varies depending onamount of ox$gen in air varies depending ona#titudea#titude


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inin Water HabitatsWater Habitats*comp#ete $our graphic organi,er+*comp#ete $our graphic organi,er+

precipitation

type of soil on

surrounding

land

too man$ nitrates

or phosphates inrunoff affects the

amount of

avai#a"#e

disso#ved ox$gen

chemicalcontent of

water

p% 5)6 is

"est

dissolved

oxygen

amount varies

ith

temperature

and

movement

sunlight

temperature

Physical

ariables

of water

Habitats


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Po##utantsPo##utants A po##utant is a varia"#e that causes harmA po##utant is a varia"#e that causes harm

to the organismto the organism %o harmfu# a po##utant is dependent on%o harmfu# a po##utant is dependent on

) a"i#it$ to cause harm) a"i#it$ to cause harm

) concentration per unit of air7 ater7 soi#) concentration per unit of air7 ater7 soi#

) ho #ong it sta$s in air7 ater or soi#) ho #ong it sta$s in air7 ater or soi#

Su#fur dioxide is an examp#e! In highSu#fur dioxide is an examp#e! In highconcentrations can ma4e "reathingconcentrations can ma4e "reathing

difficu#t! It can increase cases of asthma7difficu#t! It can increase cases of asthma7

"ronchitis can a#so react ith air to cause"ronchitis can a#so react ith air to cause

acid rainacid rain

Sources of po##utants can "e natura# orSources of po##utants can "e natura# or

man made! For examp#e7 su#fur dioxideman made! For examp#e7 su#fur dioxidecan come from coa# poer p#ant humancan come from coa# poer p#ant human

source+ or vo#canoes *natura#+source+ or vo#canoes *natura#+

-ercur$ is another examp#e of a po##utant-ercur$ is another examp#e of a po##utant

that can come from a natura# source orthat can come from a natura# source or

from human activit$from human activit$


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Leve#s of Organi,ationLeve#s of Organi,ation

!ndividual organisms!ndividual organisms

can be organi"ed intocan be organi"ed into

populationspopulationse#ge#g## antelopes on a plainantelopes on a plain

Populations are groupedPopulations are grouped

intointo communitiescommunities

e#g# antelopes birds ande#g# antelopes birds and

other animals in the areaother animals in the area $ifferent communities$ifferent communities

are grouped intoare grouped into

ecosystemsecosystems

e#g# antelopes% other animals and the rivere#g# antelopes% other animals and the river

trees% etctrees% etc

&cosystems grouped&cosystems grouped

together form thetogether form the

biomesbiomes'areas of the world and the'areas of the world and the

organisms in itorganisms in it (iomes are present in areas of the earth #(iomes are present in areas of the earth #

)ollectively% biomes ma*e up the)ollectively% biomes ma*e up the biospherebiosphere


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T$pes of InteractionsT$pes of Interactions'complete your graphic organi"er+'complete your graphic organi"er+

'note+ ,#'note+ ,# competitioncompetition

hen organisms in a communit$ vie forhen organisms in a communit$ vie for

the same food supp#$the same food supp#$ 7 ex! green cra"s7 ex! green cra"s

compete against native speciescompete against native species


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T$pes of InteractionsT$pes of Interactions'note+ /# symbiosis'note+ /# symbiosis

an interaction here 8 species #ive together for aan interaction here 8 species #ive together for a#ong time#ong time

'note all / types of symbiosis+'note all / types of symbiosis+

commensa#ism:commensa#ism:one mem"er "enefits otherone mem"er "enefits othermem"er unaffectedmem"er unaffected

mutua#ism:mutua#ism:

"oth mem"ers "enefit"oth mem"ers "enefit

parasitism:parasitism:one mem"er "enefits other mem"erone mem"er "enefits other mem"er

harmedharmed
http://images.google.com/imgres?imgurl=http://www.aasharks.com/types-of-sharks/shark-pictures/bull-shark-picture-06.jpg&imgrefurl=http://webmasterz.exteen.com/20070416/by-1&h=325&w=361&sz=8&hl=en&start=22&um=1&tbnid=ZN2-aBbALa7g2M:&tbnh=109&tbnw=121&prev=/images%3Fq%3Dcommensalism%26start%3D20%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1T4TSHB_en___US225%26sa%3DN


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*note+ Food Chains*note+ Food Chains

A food chain is ho each organism in aA food chain is ho each organism in acommunit$ gets its foodcommunit$ gets its food

Some anima#s eat p#ants and some anima#s eatSome anima#s eat p#ants and some anima#s eatother anima#sother anima#s

P#ants and some protists are ca##edP#ants and some protists are ca##ed producersproducers"ecause the$ store energ$ from the Sun!"ecause the$ store energ$ from the Sun! Anima#s that eat p#ants are ca##edAnima#s that eat p#ants are ca##ed her"ivoresher"ivores Anima#s that eat other anima#s are ca##edAnima#s that eat other anima#s are ca##ed

carnivorescarnivores Organisms a#ong a food chain pass on #essOrganisms a#ong a food chain pass on #ess

energ$ than the$ get from the food that the$ eat!energ$ than the$ get from the food that the$ eat!


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*note+ Food P$ramid*note+ Food P$ramid*find $our food e" organi,er to fi## this out+*find $our food e" organi,er to fi## this out+

A food p$ramid shos that a #argeA food p$ramid shos that a #arge

num"er of #iving things at the "asenum"er of #iving things at the "ase

are needed to support a fe at theare needed to support a fe at the

top! A food p$ramid shostop! A food p$ramid shos oneone

food chain! For examp#efood chain! For examp#e

hawk

sna*e

frog

grasshopper

grass


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*note+ Food &e"*note+ Food &e" -ost anima#s are part of-ost anima#s are part of more than one food chain!more than one food chain! The$The$

eat more than one 4ind of food to get enough food andeat more than one 4ind of food to get enough food and

nutrients! 9ou can connect man$ food chains to form anutrients! 9ou can connect man$ food chains to form afood e"!food e"! *comp#ete $our graphic organi,er+*comp#ete $our graphic organi,er+

Striped

(ass

gull

snail

seal

worm

sardines

seaweed

"ooplan*ton

crab


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Toxins in the Food ChainToxins in the Food Chain

Toxins are po##utants that can "e created "$Toxins are po##utants that can "e created "$human activitieshuman activities

%igh concentrations of toxins can impact%igh concentrations of toxins can impact

popu#ationspopu#ations Can cause s#oed groth7 decreasedCan cause s#oed groth7 decreased

reproduction7 or deathreproduction7 or death Toxins #i4e mercur$ disso#ve in fat7 not ater!Toxins #i4e mercur$ disso#ve in fat7 not ater!

The$ are stored in the fat tissues of her"ivoresThe$ are stored in the fat tissues of her"ivoresand are not passed out of their "odies!and are not passed out of their "odies!

Toxins can "e passed to the offspringToxins can "e passed to the offspring


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&or4 on Pre)Assessment&or4 on Pre)Assessment

uestionsuestions Anser the section revie on the "ac4 of $ourAnser the section revie on the "ac4 of $our

pac4etpac4et

;o not #eave an$ "#an4s;o not #eave an$ "#an4s

-a4e sure $ou as4

d687-unit 4 life science powerpoint.ppt

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