Transcript Habitats, Ecosystems and Biomes

Ecosystems
Organisms and Environments
Lesson 1
TEKS 5.9A, 5.9C, 3.9A, 3.9C
Oh, Deer!!!!!
Game!!!!!!!
• Living things depend on each other and
on the nonliving things in their
environment in order to thrive.
• Changes in the environment cause
changes to living organisms.
Habitat
• The specific environment where an
organism lives.
meadow
pond
river
tree
soil
Species
• A group of organisms that can produce
offspring that are like themselves
Population
• All the organisms of the same species
that live in the same area at the same
time.
Community
• Populations of different species that live
in the same area at the same time.
Ecosystem: all the populations of organisms and the
Nonliving things in an environment, and the interaction among
them.
Nonliving
things:
Soil
Water
Oxygen
Carbon Dioxide
Sunlight
Living
things:
Plants
Animals
Can be small (pond).
Can be large (desert).
Ecosystem
Special
Ecosystems
Biome
• One of the six major land areas of the
world that is home to specific plant and
animal populations and is defined by its
climate.
Tropical Forest
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Warm temperatures
Rainy climate
Many trees and other plants
Many animals
Have you seen Tarzan?
Desert
• Very little rainfall or snowfall
• Can be hot temperature or cold
temperature
• Few plants or animals
Have you seen Rango?
Grasslands
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Mostly flat land
Covered with tall grasses
Few trees
Warm climate
Not as dry as desert
Have you seen Dances with Wolves?
Deciduous Forest
• QuickTime™
Has four seasons
and a
Cinepak decompressor
• Warm
summer
and Cold winter
are needed
to see
this picture.
• Trees lose their leaves in autumn
• Many plants and animals
QuickTime™ and a
decompressor
are needed to see this picture.
Taiga
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Evergreen forest: fir and pine trees
Long, cold winter
Short, mild summer
Elk, moose, bears, are some animals
QuickTime™ and a
decompressor
are needed to see this picture.
Have you seen Open
Season?
Tundra
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Flat, open ground
Always frozen and cold all year long
Few plants: mosses, lichens, shrubs
Too harsh for trees
Polar bears, arctic hares, arctic fox, musk ox
QuickTime™ and a
decompressor
are needed to see this picture.
Vocabulary
• Habitat: the specific environment where an organism lives
• Species: a group of organisms that produce offspring like
themselves
• Population: All the organisms of the same species that live in
the same area at the same time
• Community: Populations of different species that live in the
same area at the same time
• Ecosystem: all the populations of organisms and the nonliving
things in an environment, and the interaction
among them
• Biome: One of the six major land areas of the world that is
home to specific plant and animal populations and is
defined by its climate
• Drought: a period of very little rainfall
• Flood: an overflow of water onto land that is normally dry
• Thrive: to grow in a strong and healthy way
• Perish: to die