1. WHY ARE THERE
DIFFERENT ECOSYSTEMS?

2. LEARNING OBJECTIVE
 To discover what makes ecosystems different

3. THE EARTH’S MAIN ECOSYSTEMS
-BIOMES
 BBC bitesize : Here and Here

4. FACTORS AFFECTING BIOMES
 climate
 relief
 geology
 soils
 vegetation

5. TUNDRA
The frozen cold ecosystems
found near the northern most
parts of the Earth are called
tundras by scientists. These
locations are known for their
long cold winters, and their
short cool summers.

6. DESERT
 Desert biomes are found throughout the
Earth. These dry locations have specialized
plants and animals that have become adapted
to surviving on little water. Some plants and
animals can actually store water within their
bodies, such as cactus, camels, and some
varieties of frogs.

7. DESERT SCRUB
 Fast-draining sandy soils in more humid
regions. These scrublands are characterized by
plants with adaptations to the dry climate,
which include small leaves to limit water loss,
thorns to protect them from grazing animals,
succulent leaves or stems, storage organs to
store water, and long taproots to reach
groundwater

8. GRASSLAND
 Grassland biomes exist throughout the
Earth, and in many cases can be vast,
expanding across millions of square miles,
or kilometers. These biomes are marked by
extensive grasses as well as a variety of
small and large animals. Some of the largest
land animals on Earth live in grasslands.

9. SAVANNAH
distinguished by their warmer
climate, and seasonal droughts.
A Savanna is a rolling grassland
scattered with shrubs and
isolated trees, which can be
found between a tropical
rainforest and desert biome

10. TUNDRA
Tundra is the coldest of all
the biomes. It is noted for its
frost-molded landscapes,
extremely low temperatures,
little precipitation, poor
nutrients, and short growing
seasons.

11. RAINFOREST
Tropical rain forests are found in
locations that receive significant
amounts of rainfall. These
locations are easily recognizable by
their abundance of lifeforms.
Including numerous trees, plants
such as ferns, and an abundance of
insects, spiders, snakes, monkeys,
and other plants and animals.

12. DECIDUOUS
Deciduous" means to fall off, or
shed, seasonally. Just as the name
implies, these deciduous trees
shed their leaves each fall. Lying
on the forest floor, the leaves
decay. As the leaves decompose,
the nutrients contained in the
leaves are absorbed by the soil.
For this reason, the soils of this
biome tend to be very fertile.

13. CONIFEROUS
FOREST
 Coniferous forest ecosystems are found in
regions of the Earth that experience
somewhat long and cold winters, with
summer being much shorter. Thus, it is no
surprise that these biomes are more
common the closer one travels towards the
Earth’s poles. Additionally, this biome is
found high atop mountains where
temperatures tend to be lower and winter
tends to last longer.

23. TASK: PG 47. Q2
EXERCISE FROM WORKBOOK: P23