Biotic and Abiotic Biotic and Abiotic factors in the factors in the EcosystemEcosystem

• Level of organization is used to show how organisms interact with each other & their environment

• Abiotic factors = non-living components that affect living organisms • Ex. Temperature, sunlight, rocks

• Biotic Factors = all living things or their materials that directly or indirectly affect organisms in its environment (includes interactions) • Ex. Plants, animals, fungi, bacteria

• A(n) ___________ factor is a living (or once living) component of an ecosystem.

• A(n) ___________ factor is a non-living component of an ecosystem.

biotic

abiotic

• An ecosystem is the interaction between __________ and

__________ factorsabiotic

biotic

Biotic AbioticAbiotic

Biotic AbioticBiotic

Biotic

Abiotic

Biotic

Biotic AbioticBiotic

Biotic AbioticBiotic

• Do these abiotic factors affect the biotic parts of an ecosystem? How?

If there is no water…can anything grow or survive?

No!

If it is extremely cold one winter, will that affect whether an animal makes it?

No!

So, abiotic and biotic DO affect each other. Even So, abiotic and biotic DO affect each other. Even though water and temperature arenthough water and temperature aren’t living things, ’t living things,

they DO affect living things!they DO affect living things!

Biotic & Abiotic Influences

Squirrels

Trees

Fish

Air

Water

Bacteria

Temperature

Squirrels

Flowers

Deer

Trees

Fish

Soil

AirMinerals

Water

Sun

Grass

• What abiotic factors are important for a plant to grow?

• Provides warmth to living organisms• Provides solar energy (light) for green plants to make

their own food• The number of hours of daylight triggers seasonal events,

such as: -plants flowering -birds migrating

• Important for life processes of all living things (plants and animals) such as:

-distributing food particles through their bodies -digesting food• Important for organisms that live under water, such as: -trout -whales -algae

• Provides oxygen (O2), which animals breathe

• Provides carbon dioxide (CO2) for plants to use to make their own food

• Provides a home for many animals that live underground -earthworms

• Provides nutrients for plants

• Plants grow in soil

Organize the following words into TWO lists, BioticBiotic and Abiotic Factors:

Clouds

Sunlight

Sand

Ph of soilAir

Wind

Soil

Rain

Mud

Rocks

Ice

Oxygen

Minerals

Mountain

Temperature

LakeVolcanoes

MoonGold

Fire

Weather

Climate

TulipBumblebee

Moss Leaf

Raccoon Polar Bear

A cell

Deer

Maple treeRaspberry bush

GoldfishPeople

Eagle

Snake

Earthworm

Corn on the plant

Salamander

Organize the following words into TWO lists, Abiotic and Biotic Factors:

Biotic AbioticClouds

Sunlight

Sand

Ph of soil

Air

Wind

Soil

Rain

Mud

Rocks

Ice

Oxygen

Minerals

Mountain

TemperatureLake Volcanoes

Moon

Gold

Fire

Weather

Climate

TulipBumblebee

Moss

Leaf Raccoon

Polar Bear

A cell

DeerMaple tree

Raspberry bush

Goldfish

People

Eagle

Snake

Earthworm

Corn on the plant

Salamander