Задание №23638 ЕГЭ по Английскому языку

The ecological importance of otters 

Furry river otters are often likened to squeaky toys due to the sounds they make. They like fighting and frolicking in the water. Observing these adorable and                          (PLAY) creatures not only brings joy, but also signifies positive news for the environment.

The otter population serves as an indicator of the overall environmental strength. In the 1900s, otters experienced a significant decline in numbers due to extensive fur                          (HUNT) and water pollution caused by toxins. However, they are not currently considered                          (DANGER). Otters seek habitats with clean water and abundant healthy fish populations.

Researchers examine otter feces for contaminants and parasites. This valuable information helps                          (SCIENCE) assess the health of the surrounding environment and the availability of food sources. 

For instance, the Elizabeth River was once plagued by                          (POLLUTE) and was deemed a "dead river." However, it has undergone remarkable improvements, and as a result, otter sightings in the area have significantly increased in the past five years.