This document discusses global environmental changes and issues. It defines environmental change as disturbances to the environment caused by natural or human factors. Global environmental change looks at large-scale changes to the Earth's systems over decades or centuries due to human impacts. Some of the major issues facing the planet are overpopulation putting stress on land and resources, climate change which the majority of scientists believe is impacted by human activities, loss of biodiversity as human destroy habitats, pollution of air, water and soil from chemicals, and concerns about adequate access to clean water supplies.

1. Managing Global
Environmental Changes
AMNA AHMED

2. CONTENTS

3. What is environmental changes?
• Environmental change is a change or
disturbance ofthe environment most often
caused by humaninfluences and natural
ecological processes.Environmental changes
include various factors, suchas natural
disasters, human interferences, or
animalinteraction.

4. What is global environmentalchange?
• Global Environmental Change addresses large-
scalechemical, biological, geological, and
physicalperturbations of the Earth's surface,
ocean, landsurface, and hydrologic cycle with
special attentionto time scales of decades to
centuries, to human-caused perturbations and
their impacts on society.

5. Following environmental issues faces
in our planet
1. Over Population: A doubt, the biggest issue facing the
environment is over population of humans. All other major
environmental issues flow from the very fact that we are
over populating the planet. The world's population has
tripled in the last 60 years, placing stress on every aspect of
the environment. Moreland is developed every day to
accommodate the urban spread.
2. Climate Change: The most controversial and political
of the top 10environmental issues is climate change.
Recently ,an overwhelming majority of climate
scientists believe that human activities are currently
affecting the climate and that the tipping point has
already been passes.

6. 3. Loss Of Biodiversity: The loss of biodiversity on
the planet can be directly related to the behaviors
of human beings. Human shave destroyed and
continue to destroy the habitats of species on a
daily basis. When we exterminate one species, it
has a knock on effect in the food chain which in
turn upsets the ecosystems inter dependent on one
another.
4. Pollution: Pollution of air, water and soil by
chemical compounds take many years to break
down. Most of these chemicals are the bi-products
of our modern lifestyle, and are created by industry
and motor vehicle exhaust. Pollution isn't just
limited to the air.

7. 5. Water Supply: Many experts believe that in the
near future water will become a commodity just like
gold and oil. Some experts' say that wars will be
fought over who owns the water supply. Currently,
one third of humans have inadequate access to
clean, freshwater