Post on 23-Dec-2015
transcript
Living Things Need Living Things Need EnergyEnergy
EnergyEnergySunlight is the Sunlight is the
source of source of energy for energy for almost all almost all living things.living things.
•Begins with the SUN as the source of energy for all living things
•Photosynthesis occurs because of the sun
6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2
ProducersProducersOrganisms Organisms
that use that use sunlight to sunlight to make foodmake food
ConsumersConsumersOrganisms Organisms
that get that get energy from energy from eating other eating other organismsorganisms
HerbivoreHerbivore Organisms that Organisms that
eats plants eats plants (gophers, (gophers, grasshoppers)grasshoppers)
PRIMARY PRIMARY CONSUMERSCONSUMERS
CarnivoreCarnivore Organisms that eat Organisms that eat
other animals other animals (wolf, coyotes, (wolf, coyotes, owls)owls)
OmnivoreOmnivore Organisms that eats Organisms that eats
both plants and both plants and animals (bears, animals (bears, humans)humans)
SECONDARY/TERTIARY SECONDARY/TERTIARY CONSUMERSCONSUMERS
ScavengersScavengers
They eat dead thingsThey eat dead things CoyotesCoyotes VulturesVultures
DecomposersDecomposers
Break down the remains of other Break down the remains of other organisms (recycles)organisms (recycles)
Consumer LevelsConsumer Levels
Primary Consumers (1Primary Consumers (1stst level) – get their level) – get their energy from plants HERBIVORESenergy from plants HERBIVORES
Secondary Consumers (2Secondary Consumers (2ndnd level) – get level) – get their energy from other organisms – their energy from other organisms – CARNIVORES/OMNIVORESCARNIVORES/OMNIVORES
Tertiary Consumers (3Tertiary Consumers (3rdrd level) – get their level) – get their energy from other organisms –energy from other organisms –CARNIVORES/OMNIVORES/SCAVENGERSCARNIVORES/OMNIVORES/SCAVENGERS
Food ChainFood Chain
Shows the Shows the transfer of transfer of energy in energy in one pathwayone pathway
Food WebFood Web
Shows many Shows many energy energy pathways in pathways in an an ecosystemecosystem
Another way of showing the Another way of showing the transfer of energy in an transfer of energy in an
ecosystem is theecosystem is theENERGY PYRAMIDENERGY PYRAMID..
Energy Pyramid InteractiveEnergy Pyramid Interactive
WebpageWebpage
Energy pyramids show Energy pyramids show Trophic level indicates Trophic level indicates
an organism’s position an organism’s position in a food chain.in a food chain.
The number of The number of consumers in a level consumers in a level will will decreasedecrease as the as the trophic levels get trophic levels get higher because they higher because they have to eat more have to eat more organisms to stay organisms to stay alivealive
Not all energy is used by producers Not all energy is used by producers 10% 10% of the energy stored of the energy stored can be passed on can be passed on to to organisms that cannot make their own food.organisms that cannot make their own food.
90% of the energy is used for everyday life 90% of the energy is used for everyday life processes (breathing, moving, digestion, etc…)processes (breathing, moving, digestion, etc…)
Some energy is lost as heat.Some energy is lost as heat.
Energy
Closer look at food Closer look at food webswebs
Food Web - MenuFood Web - Menu