NEWEST QUESTIONS AND CORRECT DETAILED
ANSWERS WITH STUDYGUIDE | EXPERT VERIFIED
FOR GUARANTEED PASS.
An allergy is a hypersensitivity to substances that are essentially harmless. For as yet poorly
understood reasons, the immune system malfunctions and marshals up an army of antibodies
to fight these substances. For many allergies, this malfunction causes a large amount of
histamine to flood into the bloodstream. It is overabundance of histamine that causes allergic
symptoms such as headaches, rashes, and sneezing. the passage states all of the following
about allergies except - VERIFIED ANSWER medical science does not fully understand why the
body has an allergic reaction to certain substances
a period of time is usually measured by comparing it with another period of time.for example, a
year on mercury is equal to 88 earth days. a year on uranus is approximately 348 mercury years.
according to the passage, the way time is usually measured shows that the time is - VERIFIED
ANSWER calendar-based
weather radar is a great help to pilots in detecting thunderstorms. however, pilots must be
aware that radar does not reliably detect hail. radar operates by transmitting a pulse of radio
energy and receiving the pulse again after it is reflected by a target. large raindrops, the kind
found in intense thunderstorms, are the best radar reflectors and will show up as intense
targets on the screen. hail is somewhat porous and has an uneven structure; it tends to absorb
or scatter the radar pulse rather than reflect it back to the antenna. according to the paragraph,
weather radar does not reliably. detect hail because of - VERIFIED ANSWER its penetrable
surface