排序
TF阅读真题第871篇Carbon Dioxide Levels in the Ocean
题目: Carbon Dioxide Levels in the Ocean The concentration of carbon dioxide gas (CO2) is rising in the atmosphere, and some of this CO2 is taken up by ocean surface waters. To ...
TF阅读真题第859篇Food Caching by Scrub Jays
Food Caching by Scrub Jays The western scrub jay is a highly intelligent bird, and biologists have conducted a number of experiments on its cognitive abilities base...
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第836篇Changes in Ancient Egyptian Art Production
TF阅读真题第836篇Changes in Ancient Egyptian Art Production
TF阅读真题第833篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第833篇The Radiocarbon Dating of Prehistoric American Sites