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“BALANCEIN
NATURE”
Nutrient Cycle and Energy Flow
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WATER CYCLE
Water cycle is NATURAL CIRCULATION of
water in the Earth.
The continuous movement of water between the
land going to the atmosphere, atmosphere back
to land.
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Processes of Water Cycle 1. PRECIPITATION. A movement of water from the
atmosphere to the Earth ( RAIN ).
2. EVAPORATION. The movement of water in theform of water vapor from the Earth to atmosphere.
3. TRANSPIRATION. The loss of water from plantsdue to evaporation.
4. CONDENSATION. The process by which watervapor turns into droplets of water.
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ROLE OF LIVING THINGS
IN THE WATER CYCLE
1. PLANTS
Plants takes water through their roots
Plants takes off water from there leaves
(stomata).
2. ANIMALS
Animals drinks water.
It gives water through respiration.
3. HUMAN
Water is a basic ingredients of life.
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CARBON – OXYGEN
CYCLE
Carbon – Oxygen cycle is a process in which there is a
exchange of gases.
Human are releasing carbon in which plants used forphotosynthesis.
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THE 4 ROLES OF CARBON
1. Carbon – is a major building block in
organisms as it is a comport of
carbohydrates.
2. CO2 enters in plant as a raw material for
photosynthesis.
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ROLES OF OXYGEN IN
CARBON-OXYGEN CYCLE
1. Oxygen is one of life’s major building block.
2. Oxygen is the acceptor of hydrogen atoms in the respiration.
3. Together with hydrogen atoms, oxygen is form into H2O
during respiration.
4. Oxygen enables heterotrophic cells to transform energy
through oxidation.
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THE MAJOR LIFE PROCESS
IN CARBON-OXYGEN CYCLE
PHOTOSYNTHESIS. The process in which plants
make their own food.
RESPIRATION. The process of oxygen exchangeto carbon dioxide.
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ROLE OF LIVING THINGS IN
THE CARBON-OXYGEN
CYCLE
Plants utilize CO2
in the process of photosynthesis.
Animals utilize O2 to break down food.
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THE NITROGEN CYCLE
The nitrogen cycle is a circulation of vital
chemical substances within an ecosystem.
Nitrogen Cycle, natural cyclic process in the
course of which atmospheric nitrogen enters
the soil and becomes part of living
organisms, before returning to the
atmosphere.
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PROCESS INVOLVE IN
NITROGEN CYCLE
1. Ammonification – the
process of releasing
ammonia ( NH2 ) From
decaying protein bymeans of bacteria action.
2. Nitrification – refers
to the action of a
group of solid
bacteria, producing
nitrates.
3. Denitrification – carried
out by denitrifying bacteria
which breaks down
ammonia, nitrates, nitrites.4. Nitrogen fixation – process
by which a certain bacteria
in the soil of leguminous
plants converts N2 intocompounds that the plants
use.
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ROLE OF NITROGEN IN
LIVING THINGS
Protein is made up of amino acid.
Amino acid is made up of amino acid group. Amino acid group is made up of one atom of
nitrogen and two atoms of hydrogen.
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THE FLOW OF NITROGEN
IN THE CYCLE Gaseous nitrogen composes
of 78% of our atmosphere inthe form of a two-atommolecule.
Plant can’t use nitrogendirectly as a nutrient.
Nitrogen-fixation, bacteriacan utilize in atmosphere.
Nitrogen fixation, nitrogenfrom the air is convertedonto nitrates.
Plants absorb NO3 as agroup of soil minerals.
Sulfur and phosphate areadded from soil minerals
Nitrogen is released fromdecaying proteins and
combines with H2 to formammonia, a process calledammonification.
Nitrite, further acted uponchemically by other bacteria
resulting in the formation of the more usable nitrates.
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THE ROLE OF LIVING THINGS
IN THE NITROGEN CYCLE
Pants – play a key role in
that they absorb simplenitrogen containingcompounds from the soil orwater incorporating theseinto complex compounds of
life. Animals – they become
involve only when they eatplans, thus absorbing theprotein.
Human – to have an
increase yield of agriculturalplants, the large-scale of fixed N2 to enhance the soilto fertile. Human also inputeutriphication process by
which lakes or anyfreshwater in ecosystemslowly become shallow bythe accumulation of deadplant material.
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ENERGY FLOW IN THE
ECOSYSTEM
FOOD CHAIN – food chain is the most
important bases of interaction among species
in a community is food. food chain is the
transfer of sun’s energy from producer to
consumer as organisms feed on one another.
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FOOD WEB
FOOD WEB – each species has more than one
than a predator, each of which in turn is prayed
upon by more than one species. The food web
is a intricate pattern formed, wherein there is
an overlapping set of relationship.
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TROPIC LEVEL
The tropic level are several feeding grouping
which producers and the consumer in the
ecosystem can be arranged. Each tropic level
contain at any time a certain amount of living
material composed of different kinds of
organisms.
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GROUP 2 MEMBERS
*GALI
*CASTILLO
*FERNANDEZ
* AMPONG
*BULANON*CADURNIGARA
*CANTONES