Why do farmers sometimes use more wasteful methods of irrigation than are available?

What substance acts to prevent sudden ph changes in bodily fluids?

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus