What gives oxygen other than plants

Which flexible structure that supports the nerve cord and led to the backbone

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

~fourth largest plate ~includes parts of the indian and atlantic oceans ~subducts below the eurasian plate on the west side ~ the arabian and somali plates form boundaries with it what is the name of the tectonic plate described above? a) african plate b) eurasian plate c) north american plate d) indo- australian plate