Asked by Joscelyn Riddles on Jul 06, 2024
Verified
Which of the following molecules is thought to have been absent from the primitive reducing atmosphere of early Earth?
A) water vapor (H2O)
B) methane (CH4)
C) hydrogen (H2)
D) oxygen (O2)
E) nitrogen (N2)
Reducing Atmosphere
An atmospheric condition in which oxygen is scarce, favoring chemical reactions that reduce compounds.
Primitive Gases
Refers to the basic or primordial gaseous elements present in the earth's early atmosphere or in cosmic environments, often including hydrogen and helium.
Oxygen
A chemical element with symbol O, essential for respiration in most living organisms and required for combustion in fires.
- Decode the evolutionary chronicle and the breadth of diversity in microorganisms, including the roles of viruses and bacteria.
Verified Answer
ZK
Zybrea KnightJul 11, 2024
Final Answer :
D
Explanation :
Oxygen (O2) is thought to have been absent from the primitive reducing atmosphere of early Earth.
Learning Objectives
- Decode the evolutionary chronicle and the breadth of diversity in microorganisms, including the roles of viruses and bacteria.