Upgrade to remove ads
Chapter 23: History of Life
Terms in this set (15)
It is generally accepted that the earth is about how many years old?
4.5 billion years old.
Life first appears in the fossil record about ______________ years ago (700 million years after the formation of the earth itself).
3.8 billion years ago
Earth's history is divided into the __________ and what three eras?
the Paleozoic, Mesozoic, and Cenozoic.
the Filamentous Prokaryote is how old and located where?
3.5 billion year old
the Fossilized Alga is how old and located where?
1.2 billion years old
The Cenozoic era is divided into what 2 periods?
The Mesozoic era is divided into what 3 periods?
The Paleozoic era is divided into what 6 periods?
The Devonian marine community dates back to ______________ years ago
409-354 million years ago
Carboniferous marine community dates back to ____________ years ago
354-290 million years ago
Jurassic terrestrial community dates back to _____________ years ago
206-144 million years ago
Change does not occur at a _________ rate
Periods of significant diversification are punctuated by _________, which wiped out many taxa
mass extinction events
Extinctions are thought to be related to
- Changing environmental conditions
- Changing biotic communities
Changing environmental conditions include
THIS SET IS OFTEN IN FOLDERS WITH...
Ch. 16 Part 2: The Eukaryotic Genome and Its Expre…
BIO 101-02: Chapter 1 Introduction
Ch. 19: Mechanisms of Evolution
YOU MIGHT ALSO LIKE...
BIOL 1040 EC Quiz History of Life
Biology Dating Test 3/13/15
History Of The Earth
OTHER SETS BY THIS CREATOR
BIO 101: Chapter 30--textbook summary
BIO 101: Chapter 29- Textbook Summary
BIO 101 Chapter 28-Textbook Summary
OTHER QUIZLET SETS
Biology 11A Chapter 17 - Module Questions
Astro Quiz 7
Concept Attainment Quiz from Flow of Matter and En…
NUR 414 Exam 3