1. Organisms and Environments Lesson 1 TEKS 5.9A, 5.9C, 3.9A, 3.9C
Ecosystems
Organisms and Environments
Lesson 1
TEKS 5.9A, 5.9C, 3.9A, 3.9C

2. 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.

3. Habitat The specific environment where an organism lives. meadow pond
tree
river
soil

4. Species
A group of organisms that can produce offspring that are like themselves

5. Population
All the organisms of the same species that live in the same area at the same time.

6. Community
Populations of different species that live in the same area at the same time.

7. Living things: Nonliving things: Ecosystem + =
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 + =
Ecosystem
Can be small (pond).
Can be large (desert).

8. Special
Ecosystems

9. 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.

10. Tropical Forest Warm temperatures Rainy climate
Many trees and other plants
Many animals
Have you seen Tarzan?

11. Desert Very little rainfall or snowfall
Can be hot temperature or cold temperature
Few plants or animals
Have you seen Rango?

12. Grasslands Mostly flat land Covered with tall grasses Few trees
Warm climate
Not as dry as desert
Have you seen Dances with Wolves?

13. Deciduous Forest Has four seasons Warm summer and Cold winter
Trees lose their leaves in autumn
Many plants and animals

14. Taiga Evergreen forest: fir and pine trees Long, cold winter
Short, mild summer
Elk, moose, bears, are some animals
Have you seen Open Season?

15. Tundra 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

16. 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