Questions
1. a prediction of the future risk of salt to water supplies
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
2. the reason why technologies must be combined to be effective
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
3. a reference to the recent improvements in the accuracy of a device
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
4. the organisation of concerned farmers into an official body
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
5. the estimated length of time salinity is likely to be a problem
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
6. a summary of stages in a proposed plan of action to combat the salt problem
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
7. the possibility that current re-vegetation practices are a waste of time
Select
A. Unless this process is clearly understood, warns Chief of Exploration and Mining Professor Neil Phillips, the hard work now underway of planning and tree-planting on the surface may be rendered ineffective: salt can still sneak past and erupt, following one of the ancient river channels formed millions of years ago. The use of airborne electromagnetics to detect salt hidden beneath the landscape has been around for a decade, but the past two years have seen a major development in its precision and powers of detection. B. Howell and his fellow farmers had decided it was time for action and established a government-funded ‘Landcare’ group in a bid to save Australia’s farmland. C. Salt has already afflicted six million hectares of once-productive country. At present rates it is predicted that, by 2050, it will have sterilised a total of 17 million hectares and the waters of Australia’s Murray River will regularly exceed the World Health Organisation’s salt limits for drinking water. D. One of the biggest advances in detection, says Professor Neil Phillips, has come with the integration of different techniques such as magnetics, electromagnetics and radiomagnetics, and ground mapping. Individually, these technologies only gave clues to what was going on underground. Together they provide a far more revealing picture of the subsurface landscape, several hundred metres deep. E. From such technologies it will be possible to locate salt stores, identify how saline they are, look at man-made and natural changes to the landscape that may cause it to mobilise, and then predict where it will head to and over what time span. This in turn will give the salt warriors best time to try various ways of containing or curbing the menace, see what works and then roll it out on the ground.
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