The distinction between the terms renminbi and yuan is similar to that between sterling and pound, which respectively refer to the British currency and its primary unit. One yuan is subdivided into 10 jiao (Chinese: è§; pinyin: jiÇo), and a jiao in turn is subdivided into 10 fen (Chinese: å; pinyin: fÄn).
Fleas are attracted to the warmth that the bodies of their hosts emit, vibrations and carbon dioxide, and they also like warm and carpeted environments where their hosts rest. These parasites feed on the blood of their hosts and can cause a number of conditions including skin infection and irritation, loss of hair and lethargy in their hosts.
In addition to heat and carbon dioxide, mosquitoes are also attracted to naturally-occurring chemicals that are released as people breathe. Day said carbon dioxide and heat will draw the mosquitoes to a crowd, but these chemicals, called secondary attractants, can lure the insects to one unlucky person at a barbecue. The chemicals vary, but one is related to estrogen, which Day said could be the reason women are often bitten by mosquitoes.