Listening FIB 1

This year, NPR and National Geographic are traveling the ____ reporting on the Earth’s changing climate. This month, we visit the world’s ­____ ocean – the Pacific. Scientists are trying to pick up ___ to the effects of climate change by tracking animals that ___ across the ocean. One of the most promising of these living probes, and the most___, is the northern elephant seal.

 

world – biggest – clues – migrate – tireless