Which is a scientific claim?
at least 75 percent of the class will pass the physical science test today because they studied more than two hours for it.
| according to the star of the number one teen tv show, crushed rosemary and olive oil spread over pimples will draw out
the bacteria and prevent scarring.
plants fertilized once per week with super plant food formula have been shown in testing to produce twice as much fruit
as plants that are not
placing half-filled one-gallon jugs of water out on the lawn prevents moles from occupying the space underground

Because the carnivores keep the herbivore population in check 

In order to understand the problems of unwanted infertility in a country — the gambia — where the desire for children and the fertility is very high, a population-based survey was undertaken. all infertile women in 24 randomly selected enumeration areas were assessed. the study included a review of the problems faced and coping mechanisms employed by infertility clients and types of health care available for infertile couples in the different types and levels of the formal and traditional health system. half of the infertile couples failed to seek formal health care, and they have to reach a certain level of care in order to be properly managed. alternative care is often sought. child fostering is also a frequent solution to childlessness. in-depth interviews revealed that traditional care like healers and spiritual leaders are frequently consulted long before formal health care. this delay could be a problem in those cases where infertility is caused by infections.