ck - common knowledge
nd - needs documentation
ck - a laptop computer is more portable than a desktop computer.
nd - one of the themes in i heard the owl call my name is the dying of the tribe’s way of life.
nd - cell phones communicate using satellites orbiting the earth.
ck - robert frost wrote poetry.
nd - “once upon a midnight dreary, while i pondered, weak and weary,”
nd - a scientist’s opinion of the global warming issue