原生质巨大矿床现在变得集中在地球表面,从矿床处涌出各种各样的茂盛植物和有活力的动物,相比于现在居住在地球上的家族,更多的家族已经灭绝了。
from which是定语从句,which代指deposit,
这句话等同于
Great deposits of protoplasm became concentrated over the earth'surface, from the deposits sprang all kinds of plants and animals that flourish, and many more families than inhabit the earth to-day becameextinct.
追问谢谢哈