CHAPTER 3 Change in the biosphere. 3.1 THE CHANGING ENVIRONMENT The earth has lived for 4.45...
-
Upload
jessie-nash -
Category
Documents
-
view
216 -
download
3
Transcript of CHAPTER 3 Change in the biosphere. 3.1 THE CHANGING ENVIRONMENT The earth has lived for 4.45...
CHAPTER 3
Change in the biosphere
3.1 THE CHANGING ENVIRONMENT
The earth has lived for 4.45 billion year and during
that time there have been many changes with human
activity.
3.1 PAGE 2
The lithosphere is one of the most changed things
on earth. Tectonic plates move the continents about
2 cm per year.
3.1 PAGE 3
Other ways that the lithosphere changes is
weathering and erosion over many years. For
example, the Grand Canyon is the effect of erosion
by the Colorado River
3.1 THE HYDROSPHERE
The hydrosphere is another part of the earth that
is constantly changing. Oceans and seas all around
the world never stay the same.
3.1 PAGE 5
The ice age is one of the times when the
hydrosphere has changed dramatically. The earth
was covered with many glaciers that helped form the
present day earth.
3.1 PAGE 6
Another change in the hydrosphere is the El Nino.
This is a stretch of warm water that runs along the
coast along the South American coast and it is in
effect for only a few weeks.
3.1 THE ATMOSPHERE
The atmosphere also has a series of changes that
happen all year round.
3.1 PAGE 8
The atmosphere can change by the rotation of the
axis and also simpler things like volcanic eruptions.
3.2 NEEDS OF ORGANISMS
Organisms have many needs to live and survive in
the environment.
3.2 PAGE 2
Water is one of the most important factors in life.
Water is needed for plants and animals to stay
hydrated.
3.2 PAGE 3
Another need for life is food and energy. When
animals eat food they obtain certain nutrients that
are needed to live.
3.2 PAGE 4
All animals need living space. Their living space is
called territory and it gives animals shelter and
other safe reasons.
3.3 THE ECOSYSTEM
Species- a group of organisms so similar to one so that they can breed.
Habits- specific environment in which a species live in.
Geographical range- total area in which a species can live
Population- all members of a species that live in the same geographic
area
Community- all the different populations that live and interact in the
same area
Ecosystem- includes all communities in an area
Biodiversity- variety of species in an ecosystem