America's wasteful oil appetite causes a host of problems: degradation of pristine areas, destructive spills, air pollution with reduced visibility and health damage, and acid rain.
The government has asked the medicine institute to assess the safety of vaccines a dozen times in the past 25 years, hoping the institute's reputation would put to rest the concerns of some parents that vaccines cause a host of problems, including autism.
And in the US, the invasion of South America's Rasberry crazy ants has caused a host of problems as the insects swarm inside electrical equipment.
They loom over the Doge's palace as they pass by, and critics claim they cause a host of problems for the City, not least environmental ones.
Lead poisoning causes a host of problems, many worse in children, including decreased intelligence, impaired neurobehavioral development, stunted physical growth, hearing impairment, and kidney problems.
The government has concluded that the private sector is not doing its bit, hence the more rigorous affirmative action in the 2004 BEE legislation.Yet already the BEE project is causing a host of new problems.
Microorganisms convert the mercury to methylmercury, which can easily enter an organism's blood and become lodged in the brain, causing a host of neurological problems.
In fact, minute amounts of the chemical may be even more potent than larger quantities as an endocrine disruptor, scrambling human hormones and causing a host of health problems.
The problem: Plastic packaging and materials are petroleum-based and usually not biodegradable, causing a host of environmental and health consequences.
When not used as directed — in high doses or from an illegal supplier — clenbuterol has killed horses and caused a host of health problems.
