Sentence examples for been a concern because from inspiring English sources

Methane leaks have long been a concern because while methane dissipates in the atmosphere more quickly than carbon dioxide, it is far more efficient at trapping heat.

Until recently, that might not have been a concern, because most implanted lenses were used after cataract surgery on older people who probably did not ride roller coasters anyway.

Pakistan had been a concern, because it shares a 1,560 mile border with Afghanistan and is one of the few nations that recognizes the legitimacy of Afghanistan's fundamentalist Taliban regime.

The influx of water from the reservoir hasn't been a concern because it has been controlled, Mitchell said.

These findings warrant further basic and clinical studies that may promote the use of withanone as a health adjuvant in a variety of consumer products where the toxicity has been a concern because of the use of ester phthalates.

The appropriateness of randomized controlled trials in evaluating HCEC has been a concern because these trials are not double-blinded [ 14].

"Increasing oil prices is a concern because it's like a tax on the consumer".

"It's a concern, because it's something that's lingered," Torre said.

In America, uncontrolled sugar consumption is a concern because of its contributions to obesity and diabetes.

Ticks are a concern because of their ability to transmit, or vector, human diseases.

A strengthening dollar could also be a concern, because it makes American exports more expensive.