The most prominent features of a narrow v-shaped valley where the stream profile drops quickly are
a. meanders and floodplains.
b. rapids and waterfalls.
c. lakes and ponds.
d. deltas and natural levees.

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.