sentences:  The presence of these deformities in both natural and man-made bodies of water cast doubt on the theory of chemical contamination, as the larger, natural lakes should not have been as susceptible to harboring high concentration of pollutants as smaller, man-made agricultural ponds.The next year Hoppe, Helgen and McKinnell obtained a $150,000 grant from the state to study the frog deformities.Even more sightings of deformed frogs were reported that year.