What is the formula of the compound formed between barium and oxygen?
A) Ba2O2
B) Ba2O
C) BaO2
D) BaO
D
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What causes magnetic stripes on the seafloor, such as those shown here?
A) Volcanic rocks in oceanic crust are covered by a variable thickness of sediment.
B) Some oceanic crust consists of volcanic rocks and some is composed of sediment.
C) Sometimes Earth's magnetic field points north and sometimes it points south.
D) Some volcanic rocks are formed in normal ways and others have pillows.
Iceland generates 95% of its electrical power from renewable resources
Indicate whether the statement is true or false
Followers of which religious branch do not trace their origin to Abraham?
A) Eastern Orthodox B) Mahayana C) Shi'ite D) Sunni E) Judaism
Which of the following functions are performed by secondary messengers?
A) amplification of a message B) transmission of a message one cell to another C) both a and b D) neither a nor b