CHAPTER 7 : LOCAL ENVIRONMENTAL PROBLEMS AND ISSUES Flashcards
The world is experiencing various
contemporary Environmental Problems and Issues that affect the ___
socio-economic, socio-cultural, and biophysical environment.
what are some of the environmental problems and issues in the province of Palawan
➢Deterioration of forests
➢ Coastal erosion
➢ Degradation of terrestrial and aquatic habitat
➢ Rapid land-use change
➢ Local climate change impacts on biodiversity
Some Environmental problems and issues in Palawan lead to unavoidable effects and risks such as
▪ Food insecurity
▪ Decline fish and crop production
▪ Disasters
▪ Health issues
▪ Poverty
___ refers to a group of individuals of the same species inhabiting an area.
Population
what are the factors that interacts to change population size
birth rate, death rate, immigration, and emigration
Growth rate (r) of population is equal to
Birthrate (b) minus death rate (d)
r = b-d
Natural increase in human population
Growth rate of population
___ is the movement from one region or
country to another affects local population
Dispersal
2 types of dispersal
immigration and emigration
Different species have different
Biotic Potential
Biotic Potential factors
• Age
• Life span in which individual can reproduce
• Number of reproductive periods per lifetime
• Number of offspring produce each period of reproduction.
Population Growth Curves
J – Shape & S – Shape Graph
Exponential Growth forms what type of shape
J - Shape
Logistic Growth forms what type of shape
S - Shape
As the population increase, so does ___
clue : it limits the population growth
Environmental Resistance
Environmental Resistance includes
limited food, shelter, increases disease and predation
limited food, shelter, increased disease & predation
occurs at or near the environment’s ___
Carrying Capacity
___ is an undesirable condition where the number of the existing human population exceeds the actual capacity of earth.
Overpopulation
what causes overpopulation
•Decline in death rate
•Agricultural Advancement
•Better Medical Facilities
•More hands to Overcome Poverty
•Child Labor
•Technological Advancement in Fertility Treatment
•Immigration
•Lack of Family Planning
•Poor Use of Contraceptives
___ allowed humans to increase
food production using fertilizer, herbicides
and pesticides and yield further.
20th century
Agricultrual Advancement leads to subsequent
___
population explosion
___ perhaps the biggest reason why the balance of population has been permanently disturbed.
Technological advancement
___ is considered as the leading cause of overpopulation.
Poverty
major factor for overpopulation
Families that have been through poverty,
natural disasters, or are simply in need of more
hands to work
As per the UNICEF, approximately
___ are currently working in countries having few child labor laws
150 million children
It made possible for couples who are unable to conceive undergo ___ methods and have their own babies
fertility treatment
fertility treatment leads to
rise in
the birth rate
People settle to a more developed countries which eventually make those places overcrowded. Which leads to ___
more demand of resources
Those type of people who are unable to understand the harmful effects of overpopulation, and lack of quality education prompts them to avoid family planning measures.
a large number of people who are living below the poverty line and have no or little
knowledge about family planning
Poor family planning on the part of partners
can lead to ___
unexpected pregnancies
Fatal Effects of Overpopulation
▪ Depletion of Resources
▪ Degradation of Environment
▪ Conflicts and Wars
▪ Rise in Unemployment
▪ High Cost of Living
▪ Pandemics and Epidemics
▪ Malnutrition, Starvation & Famine
▪ Water Shortage
▪ Lower Life Expectancy
▪ Extinction
▪ Increased Intensive Farming
▪ Faster Climate Change
The introduction of toxic or harmful materials into the physical environment.
Pollution
harmful materials into the physical
environment
pollutants
types of pollutants
• Degradable
• Slowly Degradable
• Non-degradable
this type of pollutants that can be rapidly broken down by the natural processes.
Degradable or Non-persistent Pollutants
This type of pollutants remains in the environment for many years in an unchanged condition and take decades or longer to degrade.
Slowly Degradable or Persistent Pollutants
this type of pollutants cannot be degraded by naturals processes.
Non-degradable Pollutants
Types of pollution
▪ Air
▪ Water
▪ Soil
▪ Noise
▪ Light pollution
An unwanted atmospheric condition, with the presence of substances in the atmosphere
which are harmful to living organism and its
environment.
Air Pollution
it identify and monitor the conventional pollutants and other pollutants in ambient air
(air around us)
Clean Air Act 1970
Hazardous Air Pollutants
▪ Metal Compounds
▪ Chlorinated Hydrocarbons
▪ Volatile organic compound
▪ Gasoline Vapor
▪ Solvent
▪ Components of Plastic
it is released directly from the source into the air in harmful form.
Primary Pollutants
formed by chemical reactions as components of the air mix and interact
Secondary Pollutants
natural cost of air pollution
• Dust
• Methane
• Smoke and Carbon Monoxide
• Pollen
• Gas emissions
• Volatile organic compounds (VOCs)
