Friday
April 18, 2014

Homework Help: Science

Posted by Anonymous on Wednesday, October 30, 2013 at 8:57pm.

Under which of the following conditions would a fossil most likely form?

a. a living thing dies and sediment is very slowly deposited on top of its body
b. a living thing dies and sediment quickly covers its body*
c. a living thing dies and its skeleton is left exposed to the elements
d. a living thing dies and a radioactive element breaks down its body

Radioactive decay occurs when atoms:

a. lose mass*
b. join with atoms of another element
c. break down to form atoms of another element
d. are exposed to chemical weathering

Which of the following events occurred in the Mesozoic era?

a. dinosaurs became common on land*
b. whales and dolphins evolved in the oceans
c. flowering plants flourished
d. the supercontinent Pangaea formed

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