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动物学的研究表明,哺乳动物的理论寿命应是其生长期的6倍。大部分哺乳动物的生命实践是符合这一理论的,但人类和长颈鹿却不符合,两者的生长期各为20年和6年,但平均寿命分别只有70岁和15岁左右,都远未达到120岁和36岁的理论寿命。这是为什么呢?重力是影响地球生物寿命的一大要素。长颈鹿之所以短寿,是由于其成年后的脖子长达2米,以致重力对其头部血液循环造成严重的阻碍。其他动物
Zoological studies show that mammals should have a theoretical life expectancy of 6 times their growth period. Most mammals live in line with this theory of life, but humans and giraffes do not meet the two growing periods of 20 years and 6 years, but the average life expectancy was only 70 years and 15 years of age, are far from Reach the theoretical life expectancy of 120 and 36 years old. Why is this? Gravity is a major factor affecting the life of the Earth’s biology. The reason why giraffes short-lived, because of its adult neck up to 2 meters, so that the gravity of the head blood circulation caused serious obstacles. Other animals