Fishery specialists are currently casting about and baiting their hooks to gun down control methods that will cause the lowest amount of damage to water supplies and other aquatic species. Two of the alternatives exploring are interrupting the species reproductive cycle and finding a bacterium harmful only to zebra mussels. An increasing number of lakes and rivers b. A number increasingly of lakes and rivers e. Scientists are concerned when the mussels b.
Scientists are concerned that if the mussels c.
Scientists are concerned wherein the mussels d. The zebra mussel will provide a difficult challenge for public utility managers. No one knows show far south and west the zebra mussel is likely to spread, but scientists think they may be on the trail of important clues. Although small in size, the zebra mussel may become a huge problem for pleasure boat owner in North American waterways. Despite its size, however, the zebra mussel may have a dramatic effect on North American waterways.