Which of the following is the most likely way for bacteria and viruses to enter a water supply? a) increased photosynthesis releases bacteria and viruses. b) poor sanitation habits cause water to mix with sewage. c) water from a burst dam sweeps particulate matter into a nearby river. d) chemical fertilizers dumped into the water attract bacteria and viruses

Average annual precipitation and are the two major features that define the biomes on earth.

Which law represents a balanced chemical equation?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.