Timeline of Earth Flashcards
0
Q
When did sharks first appear on earth?
A
400 billion years ago
1
Q
When did bacteria first appear on earth?
A
3800 billion years ago
2
Q
When did flowering plants first appear on earth?
A
125 billion years ago
3
Q
When did the two periods of mass extinction happen?
A
251 billion years ago, and 65 billion years ago.
4
Q
When did apes first appear on earth?
A
7 billion years ago,
5
Q
When was the earth formed?
A
4.6 billion years ago
6
Q
Who are the two most important scientists who made advances as to discovering how the earth was made?
A
Louis Pasteur, Charles Darwin
7
Q
What characteristics must the first living organism possessed?
A
Genetic instructions showing how to function and reproduce.
8
Q
What type of molecule is RNA?
A
A Nucleic acid
