Page 308 - 3 STEPS YDT ENGLISH

ENGLISH

33. It is stated in the passage that the weight of tracking
32. - 34. soruları aşağıdaki parçaya göre cevaplayınız. transmitters ----.

A) has become a significant issue since the introduction of
In the 1900s, birds were tagged with string around their legs solar panels
and handwritten identification codes. In the 1940s, radar was B) is very important especially when tracking migrating
used to study migrating animals, and by the 1950s, sonar animals
was being used. In the last 30 years, scientists have started
C) should not surpass a certain threshold which is
to track animals using satellite technology. In recent years,
calculated according to the weight of the animal
tracking transmitters have become smaller and more efficient
D) affects the movements of larger animals more than
thanks to improvements in battery technology and the use
smaller ones
of solar panels. Generally, 3% of the weight of an animal is
considered to be the upper limit for the weight of such devices, E) is still being investigated in terms of trackability
and so far, the lightest transmitters to be developed weigh
only 0.6g. Indirect techniques are used too. For example,
Australian researchers use ‘proximity sensors’ that emit a
beam of electromagnetic radiation to monitor bats without
the need for physical contact. These are used to model and
assess the spread of diseases. Other non-invasive methods
include: temperature and CO2 level checks, monitoring inside
beehives, counting footprints next to ant nests, using drones
to collect periodic photos of animals, and positioning cameras
next to nests and hives for use with image recognition
software to count individual animals.

32. It is clearly pointed out in the passage that tracking 34. According to the passage, other than tracking
animals ----. transmitters, ----.

A) has never been as easy as it was during the emergence A) methods which do not require the placement of
of radar technology equipment on animals are also used

B) has become more and more efficient since the beginning B) young researchers are looking into the availability of less
of the 20th century invasive methods
C) was done with handwritten identification codes between C) indirect techniques are only used to track bats or other
the 1940s and 1950s flying creatures
D) has raised concerns among researchers on the well-being D) methods in which data are collected through observation
of animals with tracking transmitters with cameras are most popular

E) was not possible during migration due to limitations in E) motion-sensitive cameras might be used in the future if
radar technology this technology gets cheaper

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