Differentiate between point source and non-point source pollution. Give an example of each and describe a current piece of legislation or policy designed to control each type of pollution
What will be an ideal response?
Point source pollution can be defined as pollution that comes from a specific location, often indicated by an actual outflow pipe entering a body of water. Most point sources are industrial facilities and sewage treatment facilities. The 1972 Clean Water Act requires the EPA to regulate the discharge of pollutants into waterways. Non-point sources of water pollution include fertilizer-enriched runoff from farms and golf courses. Since its original passage, the Clean Water Act has been modified/amended in recent years to accommodate new knowledge, especially as it has related to the significance and impact of non-point water pollution. There is now specific language in the CWA, requiring management and minimization of non-point sources of water pollution.
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Zn2+ is required for a number of proteins. Which of the following describes the complex formed between this ion and the involved proteins?
A) There are six coordinate covalent bonds in the structure. B) Zn2+ as eight d electrons. C) Zn probably does not obey the 18-electron rule. D) The geometry about the zinc ion is tetrahedral.
What is the predominant religion in Pakistan?
A) Buddhism B) Confucianism C) Hinduism D) Islam E) Taoism
World-empires are organized around a
A) reciprocal social economy. B) subsistence production economy. C) system of taxation and redistribution. D) capitalist social economy. E) both a system of taxation and redistribution and a capitalist social economy.
Discuss the origin of early Earth’s hydrosphere What will be an ideal response?