BIOSPHERE

Four Systems

of

Our

Earth

Composition of Earth Earth Has 4 main systems that interact:

Earth’s systems

Atmosphere Hydrosphere Biosphere Geosphere

water life land/rockAir/gases

Composition of Earth Earth Has 4 main systems that interact:

The Atmosphere The Hydrosphere The Biosphere

Life on Earth Sea life, plants, flying creatures, humans Encompasses hydrosphere, upper geosphere, and

lower atmosphere. The Geosphere

BIOSPHERE

Living things interact with Non living things in the Biosphere

Biotic Factors—living components in the biosphere

Biotic, meaning of or related to life, are living factors. Plants, animals, fungi, protist and bacteria are all biotic or living factors.

Living things interact with Non living things in the Biosphere

AbioticAbiotic Factors—nonliving components in the biosphere

Environmental factors such habitat (pond, lake, ocean, desert, mountain) or weather such as temperature, cloud cover, rain, snow, hurricanes, etc. are abiotic factors.

Role of Water in the Biosphere

Water is the universal solvent and the basis of all life on our Planet.

The hydrosphere is important to the Biosphere!

Role of the Sun for the biosphere

The Sun provides the light and heat necessary to maintain life on Earth and is the ultimate source of energy.

Biotic and abiotic factors combine to create a system or more precisely, an ecosystem.

An ecosystem is a community of living and nonliving things.

Grassland ecosystem

Plants are called producers or autotrophs because they are able to use light energy to make their own food.

Animals cannot make their own food so they must eat plants and/or other animals. They are called consumers or heterotrophs. There are three groups of consumers.

To sum up:

              Animals that eat only plants.

    Animals that eat only animals.

    

Animals that eat both animals AND plants. Humans are also omnivores!

Herbivores are animals that only eat plants or plant products (seeds). They are also called primary consumers

Carnivores are animals that eat other animals.

There are 2 kinds of carnivores

Secondary Consumers are carnivores that eat herbivores

Herbivores are primary consumers

Something that makes its own food is called a producer

Tertiary consumers are carnivores that eat other carnivores

killer whales (tertiary consumer—they eat another carnivore)

Dolphin (secondary consumer—they eat a herbivore)

Herring (primary consumer—they only eat plants)

Photoplankton (this plant produces its own food)

Animals and people who eat BOTH animals and plants are called omnivores

WE EAT PLANTS WE EAT MEAT