Science 4th grade, unit 5

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HABITATS

SCIENCE 4th grade

UNIT 5

by J. CESAR BRAZO MUR

Science 4th grade, unit 5

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All LIVING THINGS need each other to survive.

LIVING THINGS are food for other living things.

When they die, fungi, bacteria and worms release their remains back to the soil

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In a FOOD CHAIN, each living organism gets food from other living organisms

plantsProduce their own food from the soil, air and the Sun's energyPRODUCERS

Get food fromother living things

CONS

UMER

Sanimals

PREYSare eaten byother animals

(predators)

PREDATORScapture and eatother animals

(preys)

fungi, bacteria...

DECOMPOSERSEat dead animals and plants.They release nutrients back to the soil

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Snailseat plants.

It is a prey forthe bird

Birdseat sails.

It is a preyfor the fox Foxes

eat birds.They arepredators

Bacteriadescompose the remains

of all these living things and return organic matter back

to the soil

PRODUCER

CONSUMERS

DECOMPOSERS

Plantsproduce their own food

from the soil, air andenergy from the Sun

Example of forest food chain...

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Example of ocean food chain...

Phytoplanktonformed by algae that

produce their own food

Zooplanktongets food from phytoplankton

Small fisheat zooplankton

Dolphinsget food from

small fish

Orca whaleseat dolphins

PRODUCER

CONSUMERS

Bacteria andother microorganisms

descompose the remains of living organism and return

organic matter back to the sea

DECOMPOSER

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ADAPTATIONSLiving things need to adapt to their environments to survive

Physicaladaptations

Behaviouraladaptations

The chamaleon

changes its color

Some birds

migrate from one

place to another

are changes in an animal'sbody that helps it

to find food, defend itself and reproduce

are changes in an animal'sbehaviour that helps it

to interact with it's habitat

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POPULATIONS are groups of organisms of the same species which live together in the same geographical area

populationof rabbits

populationof birds

populationof ants

populationof foxes

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COMMUNITIES is a group of different species that live together and interact in the same geographical area

Different species

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A HABITAT is a place that gives an organism food, shelter, water, oxygen and a place to live.

LAND HABITATS:- DESERTS- RAINFORESTS- GRASSLANDS- FORESTS- ARTIC REGION

WATER HABITATS:- OCEANS and SEAS- PONDS, LAKES and RIVERS

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LAND HABITATSanimals and plants

Animals: Lizards and snakes, spiders, scorpions...Plants: cacti and resistant plants

Animals: Lizards, monkeys, parrots, etcPlants: Lots of trees and different plants

Animals: Polar bear, artic foxes, seals...Plants: No trees or plants

Animals: Zebras, lions, cheetahs, antelopes...Plants: Mainly grasses and only some trees

Animals: Foxes, mice, owls, bears, rabbits, etcPlants: Evergreen trees mainly

DESERTS

RAINFORESTS

ARTIC REGION

GRASSLANDS

FORESTS

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Great variations

RESUME OF THE MAIN CHARACTERISTICS OF LAND HABITATS

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WATER HABITATSTHEY ARE DIVIDED INTO...

SALTWATERhabitats

FRESHWATERhabitats

SEAS and OCEANS RIVERS: Streams of running water

LAKES: Water with land all around it

PONDS: Small area of water. This water doesn't move (like in rivers)

We find: Saltwater fish Algae

Some birds Small invertebrates

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sardine, tuna,

shark...seagull albatross

small invertebrates

trout salmon carp..

turtles, frogs...

dragonfly

mosquito...

duck crane, etc.

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CHECKPOINTAt the end of the unit, I must know...

- What do living organisms get from the food chain?

- Why do organisms need each other to survive?

- How are organisms classified in the food chain?

- What is the difference between producers, consumers and decomposers?

- What are the two types of producers and the difference between them both?

- Can you give some examples of forest food chain and ocean food chain?

- Why do animals adapt to their environment and what types of adaptations have you studied? (definition of both)

- Can you say the definition of populations and communities?

- Can you say the definition of habitat?

- What are the main land and water habitats? What are the main characteristics of each one and what plants and animals can we find there?