Temperatures have risen nearly five times as rapidly on the Western Antarctic Peninsula than the global average over the past five decades. Researchers have now found that melting glaciers are causing a loss of species diversity among benthos in the coastal waters off the Antarctic Peninsula, Impacting an entire seafloor ecosystem. They Believe increased levels of suspended sediment in water to be the cause of the dwindling biodiversity in the coastal region. On the basis of the above passage, the following assumptions have been Made : 1. Regions of glaciers warm faster than other regions due to global warming. 2. Global warming can lead to seafloor sedimentation in some areas. 3. Melting glaciers can reduce marine biodiversity in some areas. Which of the above assumptions is/are valid?
1, 2 and 3
Important Questions from Cause and Effect
Two statements numbered I and II are given. There may be a cause-and-effect relationship between the two statements. These two statements may be the effect of the same cause or independent causes. These statements may be independent causes without having any relationship. Read both the statements and decide which of the following options correctly depicts the relationship between these two statements.
Statements:
I. The Government has said that the elderly are not required to produce a doctor’s certificate for the third Covid-19 vaccination dose.
II. In view of the raise in Omicron cases, people should avoid unnecessary travel and gatherings, advises the Central Government.
A research team examined a long-term owl roost. Owls prey on small mammals and the excreted remains of those meals that accumulated over the time, provide us an insight into the composition and structure of small mammals over the past 'millennia. The research suggested that when the Earth went through a period of rapid warming about 13,000 years ago, the small mammal community was stable and resilient. But, from the last quarter of the nineteenth century, human-made changes to the environment had caused an enormous drop in biomass and energy flow. This dramatic decline in energy flow means modern ecosystems are not adapting as easily as they did in the past.
On the basis of the above passage, the following assumptions have been made :
1. Global warming is a frequently occurring natural phenomenon.
2. The impending global warming will not adversely affect small mammals.
3. Humans are responsible for the loss of the Earth's natural resilience.
Which of the above assumptions is/are valid ?
Food varieties extinction is happening all over the world --- and it is happening fast. For example, of the 7,000 apple varieties that were grown during the nineteenth century, fewer than o hundred remain. In the Philippines, thousands of varieties of rice once thrived; now only up to a hundred are grown there. In China, 90 percent of the wheat varieties cultivated just a century ago have disappeared. Farmers in the past painstakingly bred and developed crops well suited to the peculiarities of their local climate and environment. In the recent past, our heavy dependence on a few high yielding varieties and technology-driven production and distribution of food is causing the dwindling of diversity in food crops. If some mutating crop disease or future climate change decimates the few crop plants we have come to depend on to feed our growing population, we might desperately need some of those varieties we have let go extinct.
On the basis of the above passage, the following assumptions have been made :
1. Humans have been the main reason for the large scale extinction of plant species.
2. Consumption of food mainly from locally cultivated crops ensures crop diversity.
3. The present style of production and distribution of food will finally lead to the problem of food scarcity in the near future.
4. Our food security may depend on our ability to preserve the locally cultivated varieties of crops.
Which of the above assumptions are valid ?
In this question, two statements I and II have been given. These statements may be independent causes or effects of independent causes or a common cause. One of the statements maybe the effect of the other statement. Read both statements and select the correct answer.
I. This year College X reduced the cut-off marks to 50 from 60 for the entrance exam.
II. In the last two years, the Students Union in College X has been actively negotiating with the college administration regarding the Quality of food and Health and Hygiene standards at the College Canteen.
In this question, two statements I and II have been given. These statements may be independent causes or effects of independent causes or a common cause. One of the statements may be the effect of the other statement. Read both statements and select the correct answer.
I. Since the past three years, State M has reported a sharp and substantial decline in the state’s agricultural produce.
II. In the last five years, there has been an increase in the overall average Rainfall by 6% in State M bringing respite to the farmers.
