The Early Organisms That Produced the First Oxygen Gas in Earth's

question 224

Multiple Choice

The early organisms that produced the first oxygen gas in Earth's atmosphere were

• A) aerobic eukaryotes.
• B) anaerobic eukaryotes.
• C) photosynthetic prokaryotes.
• D) aerobic prokaryotes.
• E) completely unlike modern organisms.

---

Definitions:

Aquifer

An underground layer of water-bearing permeable rock or materials through which water can move and be stored.

Dry Period

An extended timespan with significantly reduced or no precipitation, leading to drought conditions and water scarcity.

Water Waste

The loss or misuse of water resources, often due to inefficient practices, leakage, or contamination.

Aquifer

A subsurface layer of permeable rock, fractures, or unconsolidated matter that holds water, allowing for groundwater to be drawn out through a well.