What is absolute dating, and what is it based on? What can absolute dating tell us? What will be an ideal response?
Absolute dating provides specific dates for rock units or events in years before present. Most absolute
dating is done by radiometric dating to obtain absolute ages. These are based on the natural decay rates
of radioactive elements present in some rocks
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Water at 4°C that slightly decreases in temperature
A. contracts. B. expands. C. neither of these D. none of the above
Deserts typically are completely devoid of vegetation and are covered with sand dunes
Indicate whether the statement is true or false
Which of the following is the correct molecular formula for hexane?
A) C6H6 B) C6H10 C) C6H14 D) C6H16
Extinctions that are relatively rare events that cause worldwide elimination of numerous species, thus opening a wealth of niches for new organisms to fill are known as ________ extinctions.
A. retrograde B. minimal C. mass D. background