Read the passage. Then answer the questions below: Humans can neither change the sun's radiation nor the earth's orbit around the sun. But they can control the increase in the amount of greenhouse gases and its effect on the atmosphere. Only during the last hundred years the carbon dioxide concentration has been raised alarmingly, in the atmosphere and we humans can be held responsible for this. The main cause of the increase in carbon dioxide level in the atmosphere is the burning of fossil fuels Since the [গণিত] the 19th century, industrial activities increased rapidly giving rise to many factories. These factories required energy, which was produced through the combustion of coal. Besides coal, other sources of energy such as mineral oil and natural gas were also burned to heat our houses, run cars and airplanes or to produce electricity.) Nowadays, about 85 million barrels of crude oil are burned daily. Every time a fossil raw material is burned, it releases carbon dioxide into the air. Therefore, it is clear that more and more greenhouse gases like carbon dioxide are being generated worldwide by humans. Moreover, we are also strengthening the greenhouse effect by deforestation, which means cutting down trees. Every year enormous areas of forests are destroyed by people to obtain wood and to clear regions for mining and to create pasture. This loss of the forest causes dual problems. Trees that are burned up release large volumes of carbon dioxide gas into the air. On the other hand, as forests absorb a lot of carbon dioxide from the air and deliver oxygen instead, we also destroy an important storehouse of carbon dioxide when we clear forests. B. Answer the following questions. (a) How can trees help us in maintaining ecological balance? (b) What is the impact of fossil fuels on atmosphere? (c) What are out of humans control? (d) What things can human being do for a congenial atmosphere? (e) What lesson do you get from the passage? Write the answer within two or three sentences.

উত্তর: (a) Trees can help us in maintaining ecological balance by taking in carbon dioxide from the air and releasing oxygen instead. (b) Fossil fuels like coal, oil, and natural gas pollute the air and change the climate. When we burn fossil fuels, they release carbon dioxide and other greenhouse gases, causing global warming. (c) To change the sun's radiation and the earth's orbit around the sun are out of the control of humans. (d) By using renewable energy and planting more trees instead of cutting down trees, human being can contribute for a congenial atmosphere. (e) From the passage, we learn that humans are mainly responsible for the rise in carbon dioxide by burning fossil fuels and cutting down trees. To protect the Earth, we must reduce pollution and save forests.

SSC ইংরেজি ১ম পত্র CQ — Prosthuti প্রশ্নব্যাংক