Question : Comprehension: In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.
Human activities are changing Earth's natural greenhouse 1. _________. Burning fossil fuels like coal and oil puts 2. _________carbon dioxide into our atmosphere. NASA has 3.__________increase in the amount of carbon dioxide and some other greenhouse gases in 4. ___________atmosphere. Too much of these greenhouse gases can 5. __________Earth's atmosphere to trap more and more heat. This causes Earth to warm up.
Question: Select the most appropriate option to fill in the blank No. 3.
Option 1: to observe
Option 2: observing
Option 3: observe
Option 4: observed
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Correct Answer: observed
Solution : The fourth option is correct.
Explanation :
In the sentence, "an increase in the amount of carbon dioxide" indicates what NASA has observed, specifically a rise in the quantity of carbon dioxide. So, the sentence means that NASA has detected and documented a rise in the levels of carbon dioxide.
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Human activities are changing Earth's natural greenhouse 1.
Question : Comprehension:
In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.
Human activities are changing Earth's natural greenhouse
Human activities are changing Earth's natural greenhouse1.
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Global warming is one of the biggest environmental (1)__________ facing the world
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