Sentence examples for has heightened over from inspiring English sources

As concern over the long drought has heightened over the past two years, Nestlé and other big water-bottling companies have found themselves increasingly under siege.

The threat of bioterrorism, long ignored and denied, has heightened over the past few years.

Concerns over the reliability and resilience of the U.S. electric grid have heightened over the past year or so, as policymakers, regulators and operators look closer at what it takes to assure adequate supplies of power at the least cost.

XTM Research Analyst Lukman Otunug said: "Fears have heightened over China's ailing economy and with confusion towards the unexpected devaluations leaving market participants questioning Beijing's overall policy intentions; global sentiment may remain heavily depressed".

Uncertainty over who is actually in charge in Pakistan has heightened concerns over the country's nuclear arsenal, which is today variously estimated at 50 to 100 weapons.

All this has heightened worries over maintenance.

Recent workplace legislation has heightened concerns over the health and safety of officers.

The oil-price spike has heightened sensitivity over hedging costs.Another area of concern is regulatory co-ordination.

The stratospheric ozone decrease has heightened concern over the ecological implications of increasing solar UV-B radiation on agricultural production and natural plant ecosystems.

But the crisis at the Fukushima plant has heightened concerns over the risks posed by quakes and tsunamis to the nearly 50 nuclear reactors in operation in Japan.

Among anti-pokies campaigners, the bruising Tasmanian and SA experience has heightened debate over whether arguing for better regulation is an effective way to bring about change.