What is the connection between a circadian rhythm and the biological clock

Why do oceanic plates tend to subduction when colliding with a continental plate

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel