I believe that this very planet was paradise for humans until they started dividing for selfish interests. They were not thrown out from another "higher" planet to the earth.
I understand IHBITU as "be degraded" in the verse below.
7:24 God said, “Be degraded with wedges of discord between one another. There will be for you an abode and sustenance for a while on earth.”
[Self interests of people had given rise to unjust marking of land and individual hoarding. Suppression of the weak had begun. God told them that they had fallen down from the high station of humanity. They had ignored the law that "Mankind is one community". From then on, they would live as tribes and nations, enemies to one another. 10:19, 49:13]
Here is my humble understanding about evolution of life as given in the Qur'an.
2:5 O Mankind! If you are in doubt that one day you will be resurrected back to life after death, consider the process of your own evolution. We have created you in stages: From inorganic matter, then from male and female gametes, then from a zygote, then from an embryo, shapely and first shapeless. We thus clearly explain things for you. The embryo and then the fetus stay in the womb until an appointed term according to Our laws. Then We bring you forth as infants and carry you to maturity. While some of you die young, others live to the feeblest old age so that they know nothing after knowing much. You see a dry barren land, but when We send down water on it, it vibrates with life and grows all kinds of beautiful plants.
[Recapturing the earlier stages of evolution, We initiated life from inorganic matter, the clay, then hydrated clay. Through it We brought forth the single life cell, the unicellular organism. Then We created the male and the female cells. Thus procreation came into play. Male and female gametes join, a clot, a little lump of flesh, turning into the embryo that ‘hangs’ in the womb. The embryo is partly formed and partly unformed, until it becomes the fetus and then assumes the final evident proportions. For the origin of life on the planet and creation of the human being, herein are some important references for the research minded reader: 4:1, 6:2, 6:38, 6:99, 7:11, 7:189, 11:6, 11:61, 15:26-27, 21:30, 22:5, 23:12-14, 24:45, 25:54, 30:20, 31:28, 32:7-9, 35:11, 36:77, 37:11, 39:6, 40:64-67, 51:49, 53:45, 55:14, 71:14-17, 76:2-3, 86:5-7, 96:1-22]