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Weather radar records drastic drop in mayfly populations（图）
Weather radar drastic drop mayfly populations
2020/2/20
At the beginning of each summer, mayfly larvae emerge from bodies of water and shed their skin to become full-fledged mayflies, similar to the way in which caterpillars become butterflies.
Prehistoric remains reveal a drastic shift in northern fur seal ecology（图）
ecology biochemistry fur seal
2007/5/24
21-May-2007，Washington, DC -- Northern fur seals have experienced major changes in their behavior, ecology, and geographic range of over the past 1,000 years, according to a new study appearing in the...