A meander is . A. an erosional feature that causes additional sediment to enter the river
B. the beginning of a mountain
C. a curve in a river
D. a depositional feature formed by moving water

(of a river or road) follow a winding course

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

They are all full and don't need any more electrons in there outer shell.