Practice task1:

There are many reasons people decide to enter the teaching field. Some enter because they enjoy
working with people or children, others because they like being off during the summer months,
and still others because of their love for a particular subject. Although all these reasons are valid,
I feel my reasons are much simpler. The bottom line is that I love kids and enjoy working with
them. My desire to make learning a more positive experience for them has only increased with
time.
Practice task2:
Divorce has touched us all either directly or indirectly. There are normally no winners involved;
everyone loses something. Things could begin to get a little better, however, if prospective
couples would take some time to get to know each other better. When couples learn to
communicate with one another and work to keep those lines open, there is growth together, not
apart. This process does take a lot of work, but the rewards can be life sustaining.
Practice task3:
College is a fun, exciting, and challenging experience for most students, but for some, it is
simply too much to handle. Few high school students are aware of what college life is like.
Unlike in high school, college classes usually require a large amount of time spent outside class,
working for the class, and some students do not understand the importance of this. A surprisingly
large number of college freshmen have extremely poor time-management skills, which can lead
to more time spent partying than studying, which is the main cause of failing tests. All of these
are causes of the students ultimately flunking out of college.
Practice task4:
Water pollution is a pressing environmental issue that poses significant threats to ecosystems,
human health, and the planet's overall well-being. Defined as the contamination of water bodies
by harmful substances, water pollution arises from various sources and activities, with far-
reaching consequences. This essay explores the causes and effects of water pollution, employing
a cause-and-effect organizational framework to elucidate the interconnectedness of factors
contributing to this global challenge.
I. Introduction
Water pollution, a pervasive problem plaguing water bodies worldwide, has emerged as a critical
environmental concern in recent decades. From industrial discharge and agricultural runoff to
improper waste disposal and urbanization, the sources of water pollution are diverse and
multifaceted. Understanding the causes and effects of water pollution is essential for devising
effective solutions to mitigate its detrimental impacts on ecosystems, communities, and future
generations.
II. Causes of Water Pollution
A. Industrial Activities
1. Chemical Discharges: Industrial facilities release toxic chemicals and pollutants into
water bodies, contaminating aquatic environments.
2. Waste Water Disposal: Improper disposal of industrial wastewater results in the release
of heavy metals, toxins, and pollutants into rivers, lakes, and oceans.
B. Agricultural Practices
1. Pesticide and Fertilizer Runoff: Agricultural runoff carries pesticides, fertilizers, and
herbicides from farmlands into water bodies, leading to nutrient pollution and algal
blooms.
2. Livestock Farming: Animal waste from concentrated animal feeding operations
(CAFOs) contaminates nearby water sources with pathogens and excess nutrients.
C. Urbanization and Infrastructure
1. Stormwater Runoff: Urban development increases impervious surfaces, leading to
heightened stormwater runoff that carries pollutants, debris, and sediment into water
bodies.
2. Sewage and Waste Disposal: Inadequate sewage treatment and waste management
systems result in the discharge of raw sewage and household waste into waterways.
III. Effects of Water Pollution
A. Environmental Impacts
1. Habitat Degradation: Water pollution disrupts aquatic ecosystems, leading to declines
in biodiversity and habitat loss for aquatic species.
2. Algal Blooms: Excessive nutrient pollution fuels algal blooms, depleting oxygen levels
and causing fish kills and ecosystem imbalances.
B. Human Health Consequences
1. Waterborne Diseases: Contaminated water sources harbor pathogens and disease-
causing microorganisms, leading to waterborne illnesses such as cholera, typhoid, and
gastrointestinal infections.
2. Toxic Contaminants: Exposure to toxic chemicals and pollutants in polluted water
sources poses health risks, including cancer, developmental disorders, and reproductive
issues.
C. Socioeconomic Ramifications
 1. Impact on Livelihoods: Water pollution disrupts fisheries, agriculture, and tourism
industries, undermining livelihoods and economic stability in affected communities.
2. Water Scarcity: Pollution of freshwater sources exacerbates water scarcity, exacerbating
tensions over water access and resource management.
IV. Conclusion
In conclusion, water pollution is a complex and pervasive environmental problem with far-
reaching consequences for ecosystems, human health, and socioeconomic well-being. By
examining the causes and effects of water pollution through a cause-and-effect lens, it becomes
evident that addressing this global challenge requires multifaceted solutions and collective action
at local, national, and international levels. From implementing pollution prevention measures and
improving wastewater treatment infrastructure to promoting sustainable agricultural practices
and raising public awareness, concerted efforts are needed to safeguard water resources and
ensure a sustainable future for generations to come. As stewards of the planet, it is incumbent
upon us to take proactive steps to mitigate water pollution and protect the invaluable resource
that sustains all life: water.

An essential element of the ecosystem is water. Water pollution occurs when harmful chemicals
or microorganisms are released into water bodies, which results in the degradation of animal and
human’s life quality.
The most common cause of water pollution is the direct disposal of industrial and human waste
into the surface water. Another reason worth mentioning is the oil spill. Since the dawn of
industrialization, numerous factories have been discharging toxic chemical compounds such as
metallic sulfides or cyanides. When being introduced into lakes, rivers, and seas, these toxic
wastes poison freshwater or saltwater animals and plants, subsequently destroy the ecosystem.
Even when the industrial waste is buried in the ground, they can still permeate the soil to pollute
the underground water, thus begin the process again.
Another cause of water pollution is human waste. Various kinds of pathogenic bacteria live in
human feces, and they may cause gastrointestinal infection if they appear in the water supply. Oil
spills are also the reason for sea pollution. Most of the marine animals cannot digest oil or
cleanse the spilling oil on their feathers. Therefore, they will die soon unless there are human
interventions. The spill also adversely affect seawater, which damages the tourist industry of
coastal regions.
To summarize, water pollution is mostly the result of oil spills and industrial or human waste
disposal. It severely affects the environment and subsequently the life of animals and human.