The easy way to ielts writing academic Module

impacts on the environment, they supply the high demand for food,
whose necessity cannot be overlooked, considering global famine and
malnutrition.
First body paragraph
Step 1: Topic sentence
(Introduce the main disadvantage.)
Causing irreversible environmental pollution is the major drawback of

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modern agricultural techniques.
(Topic sentence states the main idea of the paragraph in a simple sentence. As
I believe these methods are advantageous overall, I decided to start with the
weaker side as I will later give the stronger side more weight in the second
body paragraph, followed by my own opinion in the third body paragraph to
create enough strength at the end of the writing.)
Step 2: Explanation
(In 2-4 sentences, describe how/why it has adverse
effects.)
These ways of farming utilize significant amounts of chemical pesticides
and fertilizers, which on the one hand, help extend the crop production
season and make plants more resistant to diseases, and harsh weather
conditions, but on the other hand, they cause harm to their surrounding
environment.
Step 3: Example
(Provide a relevant example to develop the paragraph
further.)
Indeed, these chemicals add pollutants to water, which leaches into
rivers that eventually find their way to the oceans. These unfavorable
substances create water contamination that tremendously affects marine
ecosystems.
Second body paragraph
Step 1: Topic sentence 
(Introduce the main advantage.)
However, one of the eminent benefits of modern farming methods is its
potential to feed the ever-growing human population.
Step 2: Explanation
(Make 2-4 sentences to explain the topic sentence
further.)