精華區beta GRE 關於我們 聯絡資訊
ISSUE: 恰好只記得有我選的 而且很幸運的選到高頻題 159、"The human mind will always be superior to machines because machines are only tools of human minds." Argument47:火山爆發 或是星體撞擊導致全球大降溫題 ARGUMENT47 - Scientists studying historical weather patterns have discovered that in the mid-sixth century, Earth suddenly became significantly cooler. Although few historical records survive from that time,some accounts found both in Asia and Europe mention a dimming of the sun and extremely cold temperatures. Either a huge volcanic eruption or a large meteorite colliding with Earth could have created a large dust cloud throughout Earth's atmosphere that would have been capable of blocking enough sunlight to lower global temperatures significantly.A large meteorite collision, however, would probably create a sudden bright flash of light, and no extant historical records of the time mention such a flash. Some surviving Asian historical records of the time, however, mention a l oud boom that would be consistent with a volcanic eruption. Therefore, the cooling was probably caused by a volcanic eruption. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 124.8.20.165