Yes the earth is changing due to the plate tectonics because when the earth ah earthquakes and all that kind of stuff here comes earth and reshapes it.
Its lithosphere, because lithosphere is above asthenosphere
O+ 1 in 3 <span>37.4%
</span>O- 1 in 15 <span>6.6%
</span>
O- can receive O-
O+ can receive O+, O-
O can receive<span> O, A, B, AB</span>