During a ________ year period starting at about 4.5 billion years ago, bits and pieces of metal-rich particles, rocks, and ices accumulated to form the Earth.
A. 10-300 billion
B. 3-10 million
C. 30-100 million
D. 1-10 million
Answer: C
You might also like to view...
In the past, Swahili served as the lingua franca throughout East Africa
Indicate whether the statement is true or false.
The spring equinox in the Northern Hemisphere occurs on ________
June 21 March 21 September 21 December 21
Structure of the atmosphere
What will be an ideal response?
Which of the following statements is NOT true regarding Earth's ozone layer?
A. It has been damaged by the use of CFCs (chlorofluorocarbons). B. It is responsible for the greenhouse effect. C. The hole in the ozone layer is slowing repairing itself. D. It is a thin layer of oxygen molecules (O3), called ozone, found in the Earth's upper atmosphere. E. It naturally absorbs much of the incoming ultraviolet radiation from the sun.