History of Life Flashcards
1
Q
Fossil record
A
Any trace of an organism that lived in the past.
2
Q
Extinction
A
The demise of a species, meaning that no individuals of that species are still alive.
3
Q
Mass extinction
A
An event where over 50% of the species currently alive disappear in less than one million years
4
Q
Adaptive radiation
A
The rapid diversification of a lineage into a large number of species, each with adaptations that allow them to exploit different resources and habitats.
5
Q
Niche
A
The range of resources and environments that a species uses.
