(IME - 2016/2017 - 2 FASE)Texto 5HIGH-TECH EAVESDR
(IME - 2016/2017 - 2ª FASE)
Texto 5
HIGH-TECH EAVESDROPPING ON THE GANGES RIVER DOLPHIN SONAR SIGNALS HOLD CLUES THAT COULD SAVE AN ENDANGERED SPECIES
The Ganges river dolphin is one of only two remaining freshwater dolphin species on Earth. But pollution, fishing, and dams threaten to wipe it out entirely. So acoustical engineer Harumi Sugimatsu and her team have deployed an experimental sonar monitoring system just under the surface of the murky water. The hope is to track the dolphins by the high-frequency clicks they use to navigate and hunt. By eavesdropping on their underwater lives, Sugimatsu believes she can gather data about their behavior and geographical range—data that conservationists can use in their struggle to keep the species from going extinct.
IEEE Spectrum. High-tech eavesdropping on the ganges river dolphin. In: IEEE Spectrum, 2016. Disponível em: <http://spectrum.ieee.org/video/green-tech/conservation/hightecheavesdropping-on-the-ganges-river-dolphin>. Acesso em: 15/06/2016.
Choose the correct option
Two remaining factors might make the Ganges river dolphins go extinct.
Dolphins were completely removed from dams.
The sonar monitoring system floats on the river water.
Information collected through the sonar might help save the dolphins.
High-frequency clicks used to hunt hide the presence of the animals.
