When we think of air pollution we immediately think of the ways man has contributed to the accumulation over the decades. But some air pollution is the result of natural activities. Review the common types of air pollution and choose all the pollutants which are the result of both natural and man made processes

b. a lightning bug, plug of grass, and a worm

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.