1. LG: to identify Earth's 4 spheres
Life on Planet Earth
LG: to identify Earth's 4 spheres

2. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biosphere: the zone around Earth where life can exist
LG: to identify Earth's 4 spheres

3. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biosphere: the zone around Earth where life can exist
-includes 3 overlapping zones
Atmosphere:
the
layer
of gases
surrounding
Earth
LG: to identify Earth's 4 spheres

4. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biosphere: the zone around Earth where life can exist
-includes 3 overlapping zones
Lithosphere:
Earth's solid
outer layer
LG: to identify Earth's 4 spheres

5. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biosphere: the zone around Earth where life can exist
-includes 3 overlapping zones
Hydrosphere:
all of the Earth's
water in solid,
liquid, and
gas form
LG: to identify Earth's 4 spheres

6. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biomes: large geographic regions defined by climate (precipitation & temperature) with a specific set of biotic and abiotic features
LG: to identify Earth's 4 spheres

7. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biomes: large geographic regions defined by climate (precipitation & temperature) with a specific set of biotic and abiotic features
Tundra: essentially a cold desert
-extremely short growing season and low temperatures
-very slow growth of plants
-permafrost in many areas means the ground only just below the surface is frozen all year
LG: to identify Earth's 4 spheres

8. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biomes: large geographic regions defined by climate (precipitation & temperature) with a specific set of biotic and abiotic features
Boreal Forest: largest biome in Canada
-found just south of the tundra
-rainfall and warm summers support growth of trees
-conifers (evergreens) are the dominant form of tree
LG: to identify Earth's 4 spheres

9. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biomes: large geographic regions defined by climate (precipitation & temperature) with a specific set of biotic and abiotic features
Grassland: otherwise known as prairie
-moderate rainfall supports grasses but not trees
-hot, dry summers cause frequent fires which also suppress tree growth
LG: to identify Earth's 4 spheres

10. LG: to identify Earth's 4 spheres
Life on Planet Earth
Biomes: large geographic regions defined by climate (precipitation & temperature) with a specific set of biotic and abiotic features
Temperate Deciduous Forest: dominated by deciduous trees (oak, maple, & ash)
-long growing season because temperatures don't reach extreme lows of boreal region
-very diverse vegetation, including a layer of canopy trees, understorey trees, shrubs, and herbaceous (non wood) plants
LG: to identify Earth's 4 spheres

11. LG: to identify Earth's 4 spheres
Life on Planet Earth
Major Aquatic Ecosystems:
Freshwater: moving bodies of water, such as rivers, and nearly stationary bodies, such as lakes
LG: to identify Earth's 4 spheres

12. LG: to identify Earth's 4 spheres
Life on Planet Earth
Major Aquatic Ecosystems:
Freshwater: moving bodies of water, such as rivers, and nearly stationary bodies, such as lakes
Classification based on nutrient levels:
Oligotrophic: low in nutrients
Eutrophic: high in nutrients
LG: to identify Earth's 4 spheres

13. LG: to identify Earth's 4 spheres
Life on Planet Earth
Major Aquatic Ecosystems:
Freshwater: moving bodies of water, such as rivers, and nearly stationary bodies, such as lakes
Watershed: the land area drained by a
particular river, (drainage basin)
-important ecological concept since
whatever goes on in the watershed
(pollution, farming, etc) has an impact on
water quality
LG: to identify Earth's 4 spheres

14. LG: to identify Earth's 4 spheres
Life on Planet Earth
Major Aquatic Ecosystems:
Marine: the oceans make up 70% of the Earth's surface
-much of the open ocean supports very little life due to low nutrient levels
-deep ocean has little life due to low light
-shallow waters near shore are nutrient rich and support an abundance of life
LG: to identify Earth's 4 spheres

15. LG: to identify Earth's 4 spheres
Life on Planet Earth
Major Aquatic Ecosystems:
Marine: the oceans make up 70% of the Earth's surface
-much of the open ocean supports very little life due to low nutrient levels
-deep ocean has little life due to low light
-shallow waters near shore are nutrient rich and support an abundance of life
Intertidal Zone: the shoreline between high and low tide are part-time terrestrial and part
time marine
-provides for unique life forms
LG: to identify Earth's 4 spheres