Which of the Following Probably Occurred First on Earth

question 46

Multiple Choice

Which of the following probably occurred first on Earth?

• A) H₂O photosynthesis
• B) H₂S photosynthesis
• C) O₂ respiration
• D) Eukaryotic photosynthesis

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Definitions:

Genetic Isolation

A reduction in genetic variation that occurs when a population is geographically separated from other populations, potentially leading to speciation.

Reproductive Capacity

The potential or ability of an organism or population to produce offspring in a given environment.

New Genes

Genetic material that arises through mutations, gene duplication, or other mechanisms, introducing variability within species.

Sophisticated Tools

High-complexity instruments or devices designed to perform specific tasks efficiently, indicative of advanced technological or intellectual development.