Why do you think wegener was unable to prove the theories of continental drift and plate tectonics before his death in 1930?

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Which organelle breaks down sugar molecules that supply energy to the cell ?