In the 1960s Hess proposed that the crust separates along the rifts in the mid ocean ridges and that new seafloor forms by upwelling of hot new crust into these cracks. Magnetic anomaly patterns on the sea floor provide evidence. They are peculiar banded magnetic patterns found on the sea floor. By using the age of magnetic reversals they could calculate the rate of seafloor spreading using the equation speed=distance/time. Another line of evidence is the fact that rocks closest to the spreading ridge are younger and older rocks are further away. <span />
Answer:a mountain range
Explanation: because when when they crashed it created a mountain range
Answer:
If we remove a levels of organization then the study of biology i.e life would become very difficult. We won't be able to differentiate between the tissues, organs and systems of an organism and hence, studying the characteristics of an organism will become extremely difficult. We won't able to look at the similarities among organisms and hence will not be able to relate species to anther.
Removing a level such as community or ecosystem will make it difficult to understand the food chains and food web as well.
An underground oil or gas trap formed in reefs, clastic limestones, chemical limestones, or dolomite.
