D. a new substance is formed. if it is chemical change then it is actually changing to something new. In this case a new substance is formed. It is a completely different substance from what you started out with.
Plate tectonics is a term used to describe how the plates or slabs are formed as a result of faults and folds created within the earth surface and this term also used in describing how the earth was formed due to the impact of large solid objects from the outer space and the removal of gas due to the SolarWinds.
The mantel that is composed of three layers and the top of them being the asthenosphere on which Alfred Wegener gave evidence that the terrestrial plate floats freely on these with less resistance offered by SIMA.
The puzzle evidence also suggested by him was about the same theory that made the large supercontinents in existence and from which the later land masses broke off to form Pangea and Gondwanaland.
Later on much-studied were conducted in this tic to test its validity and found that the continents were truly displaced due to the spreading of the oceanic floors due to the mid-oceanic ridges and these accounts for 99% of the oceanic crustal masses. It was only possible through the deep exploration of the paleomagnetism and chain of rocks of various ages.
