"Washington exports a wide range of agricultural products to China, including wheat, potatoes, apples and cherries," she said ...

中更新世过渡（MPT）标志着冰期—间冰期气候特征的转变。关于MPT起源的一个普遍假设是，冰川深海环流发生了根本性的变化，其标志是在约90万年（海洋同位素阶段24至22）发生环流“危机”。