Earth formed approximately 4.6 billion years ago (bya). The environment was too hostile for life until about 3.9 bya, and the earliest fossil evidence for life dates to 3.5 bya. Taken together, this evidence provides a plausible range of dates for the origin of life.
Standard detail
7.12.A.1.ii
Depth 4Parent ID: CF4C9316B7DE4567A3986ABB4E9D39BFStandard set: AP Biology (2025)
Original statement
Quick facts
- Statement code
- 7.12.A.1.ii
- List ID
- ii
- Standard ID
- 2315CF64B0F74BE09FFB4DE0965919A7
- Subject
- AP Biology
- Grades
- 09, 10, 11, 12
- Ancestor IDs
- CF4C9316B7DE4567A3986ABB4E9D39BF69F2B95D3FDB4D74B92647932E97423214709FB7F4614706BE8D75DD425499A697871A32C9D84B5C97C5C2FEB6FDA67E
- Source document
- AP® Biology COURSE AND EXAM DESCRIPTION Effective Fall 2025
- License
- CC BY 4.0 US