Which of the following would most likely be considered point source pollution? (2 points)

chemical dumping into a river by a factory

increased phosphates from household detergents

fertilizers being carried away from a farm by runoff

sediment from improperly managed construction sites

Chemical dumping into a river by a factory

A point source pollution results when the pollutants comes from a single source. In point source pollution the site of origin of pollution can be identified. A point source pollution can be prevented and controlled by preventing the flow of source contaminants.

Chemical dumping into a river by a factory is an example of point source pollution because the source of pollutant (chemical) is known that is factory.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.