Which of the following is not a convergent boundary? ?

a. continental-continental
b. continental-volcanic
c. oceanic-continental
d. oceanic-oceanic

"water seeps into rock cracks and dissolved minerals there.the solution travels through cracks in the. eventually concentrating into large crystals." which process is that

8. is a technique that uses the images from several telescopes to produce a single image. a. reflection b. interferometry c. radiation d. refraction

Is an official language in every north african country