nurture
发表于 2025-4-1 02:59:42
,Variability of the Earth’s Climate,nd Interglacials over the past ~800,000 years. These quasi-cyclic climate variations apparently began about 3,000,000 years ago (ya), but the duration and depth of the cold periods increased as time progressed. We refer to these cold periods as “Ice Ages.”
Dysarthria
发表于 2025-4-1 06:59:12
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礼节
发表于 2025-4-1 10:56:29
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