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Grammar and Creative Writing Skills — English Core STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceEnglish CoreGrammar and Creative Writing Skills5 Marks
Question
Human activities are leading to serious environmental changes globally. It is going to cause much trouble to the future generation, write a speech to be delivered in the morning assembly. Do not exceed the word limit of 120-150 words.
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Answer

Influence of Human Activity on the Environment

Respected Principal, teachers and my fellow students, good morning to all. Today, I, ABC of class XI, am going to present my views on the topic, ‘Influence of Human Activity on the Environment’. Improvements in agriculture, health and medicine have produced a dramatic rise in the human population. This increase in population size leads to an increase in pollution and higher demand for the world’s resources.

Humans are using up the earth’s resources, including fossil fuels. Burning fossil fuels in cars and power stations produces carbon dioxide, sulphur dioxide and other greenhouse gases. Carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise. This leads to disruption of the weather patterns and natural calamities such as drought and floods occur. Some weeds may thrive on the extra carbon dioxide while other plants are killed.

Sulphur dioxide dissolves in rain producing Acid Rain. Acid rain damages trees and pollutes rivers and lakes. In many countries people are chopping down forests to provide timber to create space for agriculture for the growing population. This deforestation causes several problems such as the greenhouse effect, soil erosion and extinction of species.

To grow more crops, too much fertiliser is added and when it then rains, the fertiliser finds its way into rivers and lakes. This causes the water plants to grow and as there is competition for light, some will die. Use of pesticides also causes pollution. Pesticides kill insects that will damage crops. They also kill harmless insects or can get washed into rivers and pollute the water. They may even end up in the food chain. Thus, human activities have caused a lot of damage to our environment and it is high time to adopt organic farming, grow trees and use alternative energy sources.
Thank you

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