Which of the following produced most of the oxygen that is found in the atmosphere today?
a living organisms
b outgassing
c condensation
d photodissociation
my gut is telling me b but i could be

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.