From Where Did the Oxygen in the Earth's Atmosphere Originate

question 76

Multiple Choice

From where did the oxygen in the Earth's atmosphere originate?

• A)atmospheric bombardment
• B)outgassing from volcanoes
• C)chemical reactions between gas in the upper atmosphere and the solar wind
• D)photosynthesis from plant life and single- celled organisms
• E)oxidation of surface rocks

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Definitions:

Power Brick

An external power supply unit that converts electrical power from a wall outlet to the proper voltage and current to operate a device.

Protocol

A protocol is a set of rules and standards that enable two entities to communicate over a network, ensuring the successful transmission of data.

POP3

Post Office Protocol 3, an internet standard protocol used by local email clients to retrieve emails from a remote server over a TCP/IP connection.

IMAP

Internet Message Access Protocol, a protocol that allows a client to access and manipulate electronic mail messages on a server without downloading them to the local computer.