Biological Geological Chemical

2. TOPICS
Materials and Nutrients Cycling
Pathways of Biogeochemical Cycle
Categories of Biogeochemical Cycle
Gaseous Cycle
Sedimentary Cycle

3. Biogeochemical Cycle
are pathways that let elements move
through ecosystems. Because you cannot
create or destroy matter, they help explain
how all living and nonliving things cycle
through nature. Earth acts as a closed system
for the movement of matter, and a
biogeochemical cycle includes the chemical,
geological and biological pieces of this
pathway.

4. Biogeochemical cycles help explain how the
planet conserves matter and uses energy. The
cycles move elements through ecosystems, so
the transformation of things can happen. They
are also important because they store
elements and recycle them. Moreover,
biogeochemical cycles can show you the
connection among all living and nonliving
things on Earth.

5. There are many different types of
biogeochemical cycles, but the most
common ones include water, carbon,
nitrogen, sulfur and phosphorus.

6. Everything in nature follows a cyclic
pattern, which is how the environment
constantly replenishes itself. In the
physical sciences, the first law of
thermodynamics essentially says that
energy is neither created nor destroyed;
it just changes forms.

7. The main cycles in an ecosystem include
the water cycle, the carbon cycle, and the
nitrogen and phosphorous cycles. A
break in any one of these cycles can
threaten or destroy an ecosystem.

8. CATEGORIES OF BIOGEOCHEMICAL CYCLE
Water Cycle
Gaseous Cycle
Sedimentary Cycle

9. WATER CYCLE
The Role and Function of Water
Water links and maintains all ecosystems on
the planet.

11. GASEOUS CYCLE
The gaseous cycles exist in the
atmosphere (air) or Oceans through
evaporation. The different gaseous cycles
are the nitrogen cycle, carbon cycle,
oxygen cycle

12. SEDIMENTARY CYCLES
The sedimentary cycles have the earth’s
crust as the reservoir pool. These cycles
include the chemical components that are
more earthbound, such as iron, calcium,
sulphur etc. The gaseous cycles move more
rapidly when compared to the sedimentary
cycles. One of the primary reasons for this
could be the large atmospheric reservoir.

13. Carbon Cycle
Any matter is called organic if it has
carbon in it. Carbon is essential and is
required to produce the molecules of
nutrients such as carbohydrates, proteins,
and fats. Plants use carbon dioxide and
prepare food. Animals, in turn, consume
plants. When plants and animals
decompose, they release carbon dioxide.

14. Animals also release carbon dioxide
during their respiration process. Carbon
is also released when organic matter in
burnt. In this way, carbon dioxide finds its
way back to the atmosphere. This is
again taken up by plants and the
biogeochemical cycle continues.

15. Water Cycle
Water is absorbed from the soil by
plants. When transpiration occurs in
plants, they release water. In animals,
most of the body is made up of water.
Animals also drink water. Also when they
perspire, water is released and gets
evaporated into the atmosphere.

16. When animals are eaten by other
animals, the water goes from one
organism to the other. When animals and
plants decompose, they release water,
due to the chemical processes that occur.
In this way, there is a continuous
recycling of water through the
various components of the ecosystem.

17. Nitrogen Cycle
Nitrogen is a very important element that is
present in the genetic material- DNA and
RNA. The nitrogen cycle is considered as the
most complex of all biogeochemical cycles
and it exists in nature in many forms.
Nitrification, Denitrification, Nitrogen fixation
etc. are all processes that are associated with
the nitrogen cycle.