B. are more difficult to control than point sources. This is because A. is wrong (point source), and C. is wrong, because it doesn't necessarily cost less or more to identify the sources. D. may be right, as non point sources are natural, such as snow melts or rain.
Acid rain can cause many problems, such as stripping paint and burning skin, but I believe the answer you are looking for is "decay," which is the process that occurs when an organism decomposes.
The potato crop devastation occurred in Ireland for not using one single potato species.
Explanation:
Potato became the staple crop of 18th Century Ireland and was easy to grow in the soil of this place. Later, it became the most dependent crop of the people of Ireland which made its supply very demanding leading to the yielding of more than one species of potatoes.
This yielding reduced the variety in the genetics of potatoes that helped in preventing the disease that affect potatoes by making the Irish people susceptible to famine. The Phytopthora bacteria affected the potatoes of North America in the year 1840 and Ireland’s moist weather in that same year made the blight to thrive.
This ringing indicates possible damage to the hair cells of her basilar membrane. The basilar membrane is a stiff structural element that separates two liquid-filled tubes that run along the coil of the cochlea within the cochlea of the inner ear, <span>the scala media and the scala tympani.</span>