Question

3 multiple choice 1 point why wasnt the theory of continental drift accepted at first? no known mechanism both of those none of these wind and currents could move fossils 4 multiple choice 1 point what did the ocean floor mapping prove? desertification of australia movement of fossils by currents glaciers in southern africa sea floor spreading

Explanation:

For question 3, the theory of continental drift was initially rejected because there was no known mechanism for continental movement and critics argued wind/currents could move fossils, so "both of those" applies. For question 4, ocean floor mapping revealed mid-ocean ridges and magnetic patterns, proving sea floor spreading.

Answer:

1. B. both of those
2. D. sea floor spreading