Which of the following is NOT an example of a Convection current? A. The roiling movement of Magma
B. The morning storm by a coast
C. The movement of air in Hadley cells
D. The outwards flow of water in a Rip Current

Witch one is it soo it the the question b. a,b, c,d

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)