Which supercontinents were present on earth at the begining of the cretaceous period?
a. laurasia and gonwana
b pangea
c. laurussia and gondwana
d rodinia

B. Pangea

Explanation:

b Pangea

Explanation:

Pangea is among the supercontinent that has been in existence since the era of Paleozoic and Mesozoic. It was assembled from the continental units, which are about 300 million years. The mechanism of the breaking of Pangea can be explained in terms of electronics that states that the content of the earth is joined together forming a supercontinent which lasted to for an extended period during the geological time. According to the spreading of the seafloor, Pangea breaks apart slowly in distinct stages.