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TF阅读真题第821篇Using Animal Bones to Determine Climates
TF阅读真题第821篇Using Animal Bones to Determine Climates
TF阅读真题第887篇Why Did Agriculture Arise
Why Did Agriculture Arise Sometime around 10,000 years ago, some hunter-gatherers took up agriculture. Though the advantages may seem obvious, there are also disadvantages: ...
TF阅读真题第895篇Parental Care by Frogs
Parental Care by Frogs Only an estimated 10 percent of anuran (frog and toad) species provide any kind of parental care. But within this 10 percent there is very great diversity ...
TF阅读真题第849篇Azolla and Climate in the Arctic and Europe
TF阅读真题第849篇Azolla and Climate in the Arctic and Europe
TF阅读真题第883篇The Azolla Event
The Azolla Event During the early Eocene period, about 56 million years ago, Earth's atmosphere had high levels of carbon dioxide(CO2) which warmed the planet. But a...
TF阅读真题第851篇The Rise and Spread of Japanese Woodblock Prints
TF阅读真题第851篇The Rise and Spread of Japanese Woodblock Prints
TF阅读真题第869篇Temperate Plant Phenology
Temperate Plant Phenology Phenology is the timing of growth and reproductive activity within a year, and it can vary greatly among plant species, populations, and even indiv...
