Wildfires:
A threat to all
Earth's system
PRESENTATION PREPARED BY:
LEANJADE B. BARO
GAS 11-AMICABILITY
“Fire connects all
systems: air, land, water,
and life itself.”
WILDFIRES
- are uncontrolled fires that spread
rapidly in forests, grasslands, or
other natural areas.
Causes:
lightning strikes, human negligence,
climate change (hotter, drier
conditions).
Recent examples: Australian
bushfires (2019–2020),
Canadian wildfires (2023).
Biosphere Impact
•Destroys vegetation and
wildlife habitats.
•Loss of biodiversity and
disruption of food chains.
•Forces animal migration and
kills slower-moving species.
•Post-fire regrowth can take
years or decades.
Atmosphere
Impact
•Releases large amounts of
carbon dioxide (CO₂) and other
greenhouse gases.
•Smoke and soot cause air
pollution, harming respiratory
health.
•Contributes to climate change
by trapping heat in the
atmosphere.
Geosphere
Impact
•Burns away nutrient-rich topsoil.
•Increases soil erosion and
landslide risk.
•Changes land surface composition
(charred, unstable ground).
•Loss of tree roots means less soil
anchoring.
Hydro-
sphere
Impact
•Ash and debris wash
into rivers, lakes, and
reservoirs.
•Water pollution harms
fish and aquatic plants.
•Damages drinking
water quality for
humans and wildlife.
•Increases risk of
flooding after rain
(no vegetation to
absorb water).
Biological Connection
Cells:
Heat damages plant
and animal cells by
breaking down cell
membranes and
denaturing proteins.
Biological Connection
Macromolecules:
•Proteins (enzymes) lose function at high
temperatures.
•DNA in cells can be destroyed, preventing
reproduction.
•Lipids in cell membranes melt and lose
structure.
•Carbohydrates (like cellulose in plants) fuel
the fire as they burn.
"Reflective / Solutions"
Prevention:
•Controlled burns to
reduce fuel,
•enforcing fire bans
in dry seasons,
•public awareness
campaigns.
Mitigation:
•Firebreaks,
•rapid-response
firefighting
teams,
•reforestation
programs.
Climate Action:
• Reduce greenhouse
gas emissions to
slow warming and
drying trends.
Personal Role:
• Report fires early,
• avoid risky activities
(fireworks),
• support conservation
groups.