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Overgrazing is an environmental hazard where wildlife or livestock excessively feeds on pasture. It takes place when pasture is repeatedly removed from land and it is not given enough time to continue growing. It signifies a serious environmental challenge in maintaining the natural balance of live-stocks on grazing lands, which reduces the productivity,usefulness and biodiversity of the land. There are several effects of this on the environment. Which of the following, if true, would weaken the conclusion about the disadvantages of overgrazing? 

Overgrazing is an environmental hazard where wildlife or livestock excessively feeds on pasture. It takes place when pasture is repeatedly removed from land and it is not given enough time to continue growing. It signifies a serious environmental challenge in maintaining the natural balance of live-stocks on grazing lands, which reduces the productivity,usefulness and biodiversity of the land. There are several effects of this on the environment. Which of the following, if true, would weaken the conclusion about the disadvantages of overgrazing?  Correct Answer One of the reasons for this would be because of poor irrigation methods in arid and semi-arid areas.

Option 5 is the correct answer as it is the only option which does not talk about the disadvantages of overgrazing. The statement talks about one of the causes for this that is because of poor irrigation methods salt gets accumulated in the soil and which affects the growth rate of the crops.

Other 4 options talks about the disadvantages such as it causes land degradation, various economic challenges, even death. But these do not satisfy the question asked thus is discarded.

Related Questions

In the question three statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: Some injuries are serious. Statement II: No relation is serious. Statement III: All athletes have injuries. Conclusion I: Some athletes are serious. Conclusion II: Some athletes have relation is a possibility. Conclusion III: No athletes is serious.
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. Many farmers use synthetic pesticides to kill infesting insects. The consumption of pesticides in some of the developed countries is touching 3000 grams/hectare. Unfortunately, there are reports that these compounds possess inherent toxicities that endanger the health of the farm operators, consumers and the environment. Synthetic pesticides are generally persistent in environment. Entering in food chain they destroy the microbial diversity and cause ecological imbalance. Their indiscriminate use has resulted in development of resistance among insects to insecticides, upsetting of balance in nature and resources of treated populations. Natural pest control using the botanical pesticides is safer to the user and the environment because they break down into harmless compounds within hours or days in the presence of sunlight. Plants with pesticidal properties have been in nature for millions of years without any ill or adverse effects on the ecosystem. They are easily decomposed by many microbes common in most soils. They help in the maintenance of biological diversity of predators and human health hazards. Botanical pesticides formulated from plants are biodegradable and their use in crop protection is a practical sustainable alternative. Which of the following statements is/are correct regarding biopesticides? 1. They are not hazardous to human health. 2. They are persistent in environment. 3. They are essential to maintain the biodiversity of any ecosystem. Select the correct answer using the code given below.
The Chipko movement started in Uttarakhand, this was a movement taken to protect the environment. It started in 1973 in Chamoli district. The farmers of the village fought this movement against the cutting of forests and jungles by state forest contractors. The people of the village wrestled with trees such that the contractors were not able to cut trees. There were several effects of this movement, few of which is given below. Which of the following, if true, would weaken the conclusion about the effects of chipko movement? 
Our body needs sleep, just like it needs air and food to function at its best. During sleep, our body heals itself and restores its chemical balance. Without enough sleep, one's brain and body systems wont function normally. It can also dramatically lower ones quality of life. A study was made that by sleeping for less than 6 to 8 hours a night increases the risk of early death by 12%.  There are many effects because of sleep deprivation. Which of the following, if true, would weaken the conclusion about the effects of this? 
Formal education is the process of training and developing people in knowledge, skills, mind and character in a structure and certified program. Now a days, formal education have become like a business. Parents are working hard day and night for arranging money to pay the fees for the students education. While on the other hand, the fees of the school are rising immensely and the quality of education is deteriorating at a very high speed. There a lot many disadvantages of formal education which are listed below. Which of the following, if true, would weaken the conclusion about the disadvantages of formal education? 
Read the paragraph and answer the question that follows: An environment is the natural surroundings which help life to grow, nourish and destroy on this planet called earth. Natural environment plays a great role in the existence of life on earth and it helps human beings, animals and other living things to grow and develop naturally. But due to some bad and selfish activities of human beings, our environment is getting affected. It is the most important topic that everyone must know how to protect our environment to keep it safe forever as well as ensure nature’s balance on this planet to continue the existence of life. It is important to protect the environment to ensure –
Read the paragraph and answer the question that follows: An environment is the natural surroundings which help life to grow, nourish and destroy on this planet called earth. Natural environment plays a great role in the existence of life on earth and it helps human beings, animals and other living things to grow and develop naturally. But due to some bad and selfish activities of human beings, our environment is getting affected. It is the most important topic that everyone must know how to protect our environment to keep it safe forever as well as ensure nature’s balance on this planet to continue the existence of life. What affects the environment badly?
Read the passage carefully and select the best answer to each question out of the given four alternatives. The conclusion of World Trade Organizations 11thbiennial ministerial conference at Buenos Aires was worrisome. From an Indian standpoint, there was no loss asstatus quo continues in the most important issue: the right to continue the food security programme by using support prices. But the inability of the negotiators toreach even one substantive outcome suggests that WTOs efficacy is under question. As a 164-country multilateral organisation dedicated to crafting rules of tradethrough consensus, WTO represents the optimal bet for developing countries such as India. Strengthening WTO is in Indias best interest. Perhaps the biggest threat to WTOs efficacy today is the attitude of the US. The worlds largest economy appears to have lost faith in the organisation and hasbegun to undermine one of its most successful segments, the dispute redressal mechanism. This is significant as the US has been directly involved in nearly half ofall cases brought to WTO. Separately, large groups of countries decided to pursue negotiations on e-commerce, investment facilitation and removal of tradeobstacles for medium and small scale industries. By itself this should not weaken WTO. But it comes at a time when there is growing frustration with gridlock atWTO. India did well to defend its position on its food security programme. The envisaged reform package which will see a greater use of direct cash transfers tobeneficiaries will be in sync with what developed countries do. But its important for India to enhance its efforts to reinvigorate WTO. In this context, Indias plan toorganise a meeting of some countries early next year is a step in the right direction. WTO represents the best available platform to accommodate interests of adiverse set of nations. Therefore, India should be at the forefront of moves to fortify it. According to the passage, which of the following statement is NOT true?
Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.
Riparian vegetation [the green band of vegetation along a watercourse] can help stabilize stream banks; filter sediment from surface runoff; and provide wildlife habitat, livestock forage,and scenic value. Well-developed vegetation also allows bank soils to absorb extra water during spring runoff, releasing it later during drier months, thus improving late-summer stream flows. In many parts of the arid West, trees and shrubs are found only in riparian areas. Woody plants are very important as winter cover for many wildlife species, including upland game birds such as pheasants and turkeys. Often this winter cover is the greatest single factor limiting game bird populations. Woody vegetation also provides hiding cover and browse for many other species of birds and mammals, both game and nongame. Dead trees ("snags") are an integral part of streamside habitats and should be left standing whenever possible. Woodpeckers, nuthatches, brown creepers, and other birds eat the insects that decompose the wood. These insects usually pose no threat to nearby living trees. Occasionally a disease organism or misuse of pesticides will weaken or kill a stand of trees. If several trees in a small area begin to die, contact your local extension agent immediately . How dependent are plants and animals on each other?
Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.
Riparian vegetation [the green band of vegetation along a watercourse] can help stabilize stream banks; filter sediment from surface runoff; and provide wildlife habitat, livestock forage,and scenic value. Well-developed vegetation also allows bank soils to absorb extra water during spring runoff, releasing it later during drier months, thus improving late-summer stream flows. In many parts of the arid West, trees and shrubs are found only in riparian areas. Woody plants are very important as winter cover for many wildlife species, including upland game birds such as pheasants and turkeys. Often this winter cover is the greatest single factor limiting game bird populations. Woody vegetation also provides hiding cover and browse for many other species of birds and mammals, both game and nongame. Dead trees ("snags") are an integral part of streamside habitats and should be left standing whenever possible. Woodpeckers, nuthatches, brown creepers, and other birds eat the insects that decompose the wood. These insects usually pose no threat to nearby living trees. Occasionally a disease organism or misuse of pesticides will weaken or kill a stand of trees. If several trees in a small area begin to die, contact your local extension agent immediately . What is the effect of the word choice 'riparian'?