Fleas are perfectly designed by
nature to feast on anything containing blood. Like a shark in the water or a
wolf in the woods, fleas are ideally equipped to do what they do, making them
very difficult to defeat. The bodies of these tiny parasites are extremely
hardy and well-suited for their job.
A flea has a very hard exoskeleton,
which means the body is covered by a tough, tile-like plate called a sclerite.
Because of these plates, fleas are almost impossible to squish. The
exoskeletons of fleas are also waterproof of fleas are also waterproof and shock
resistant, and therefore fleas are highly resistant to the sprays and chemicals
used to kill them.
Little spines are attached to his
plate. The spine the flea scurries through an animal’s fur in – search of
grooming pet tries to pull a flea off through the hair coat, these spines will
extend and stick to the fur like Velcro.
Fleas are some of the best jumpers
in the natural world. A flea can jump seven inches, or 150 times its own
length, either vertically or horizontally. An equivalent jump for a person
would be 555 feet, the height of the Washington Monument. Fleas can jump 30,000
times in a row without stopping, and they are able to accelerate through the
air at an incredibly high rate – a rate which is over ten times what humans can
withstand in an airplane.
Fleas have very long rear legs with
huge thigh muscles and multiple joints. When they get ready to jump. They fold their
long legs up and crouch like a runner on a staring block. Several of their
joints contain a protein called resilin, which helps catapult fleas into the
air as they jump, similar to the way a rubber band provides momentum to a
slingshot. Outward facing claws on the bottom of their legs grip anything they
touch when they land.
The adult female flea mates after
her first blood meal and begins producing eggs in just 1 to 2 days. One flea
can lay up to 50 eggs in one day and over 2,000 in her lifetime. Flea eggs can
be seen with the naked eye, but they are about the size of a grain of salt. Shortly
after being laid, the eggs begin to transform into cocoons. In the cocoon
state, fleas are fully developed adults, and will hatch immediately if
conditions are favorable. Fleas can detect warmth, movement, and carbon dioxide
in exhaled breath, and these three factors stimulate them to emerge as new
adults. If the flea does not detect appropriate conditions, it can remain
dormant in the cocoon state for extended periods. Under ideal conditions, the
entire life cycle may only take 3 weeks, so in no time at all, pets and homes
can become infested.
Because of these characteristics,
fleas are intimidating opponents. The best way to control fleas, therefore, is
to take steps to prevent an infestation from ever occurring.
The author mentions the Washington
Monument in order to
In the early 1920's,
settlers came to Alaska looking for gold. They traveled by boat to the coastal
towns of Seward and Knik, and from there by land into the gold fields. The
trail they used to travel inland is known today as the lditarod Trail, one of the
National Historic Trails designated by the congress of the United States. The
Iditarod Trail quickly became a major thoroughfare in Alaska, as the mail and
supplies were carried across this trail. People also used it to get from place
to place, including the priests, ministers, and judges who had to travel
between villages down this trail was via god sled.
Once the gold rush ended, many gold-seekers
went back to where they had come from, and suddenly there was much less travel
on the lditarod Trail. The introduction of the airplane in the late 1920's
meant dog teams were mode of transportation, of course airplane carrying the
mail and supplies, there was less need for land travel in general. The final
blow to the use of the dog teams was the appearance of snowmoniles.
By the mid 1960's most Alasknas didn't even
know the lditarod Trail existed, or that dos teens had played a crucial role in
Alaska's early settlements. Dorothy G.Page, a self-made historian, recognized
how few people knew about the former use of sled dogs as working animals and
about the Iditarod Trail's role in Alaska's colorful history. To she came up
with the idea to have a god sled race over the Iditarod Trail. She presented
her idea to an enthusiastic musher, as dog sled drivers are known, named Joe
Redington, Sr. Soon the pages and the Redintons were working together to
promote the idea of the Iditarod race.
Many people worked to make
the first Iditarod Trail Sled Dog Race a reality in 1967. The Aurora Dog
Mushers Club, along with men from the Adult Camp in Sutton, helped clear years
of overgrowth from the first nine miles of the Iditarod Trail. To raise
interest in the race, a $25,000 purse was offered, with Joe Redington donating
one acre of his land to help raise the funds. The short race, approximately 27
miles long, was put on a second time in 1969.
After these first two
successful races, the goal was to lengthen the race a little further to the
ghost town of Iditarod by 1973. However in 1972, the U.S. Army reopened the
trail as a winter exercise, and so in 1973, the decision was made to take the
race all the way to the city of Nome-over 1,000 miles. There were who believed
it could bot be done and that it wad crazy to send a bunch out into vast,
uninhabited Alaskan wilderness. But the race went! 22 mushers finished that
year, and to date over 400 people have completed it.
As used in paragraph-3,
the phrase “self-made historian” implies that Dorothy G. Page
