Topic 15

Question 1

destruction and recreation

Answer 1

revolutions

Question 2

out link to the past

Answer 2

Fossils

Question 3

relative position in rock layers

Answer 3

Stratigraphy

Question 4

common fossils of known age

ex/snail

Answer 4

index fossils

Question 5

normal process wiping out species

Answer 5

background extinction

Question 6

an event or series of events that wipes out a large number of species (40-50% o more in many major taxa)

Answer 6

mass extinction

Question 7

propagation of species

-how likely groups are to speciate

Answer 7

origination

Question 8

extinction is based only on how a species responds to current environment
-if you can adapt, you will go extinct

Answer 8

Red Queen Hypothesis

Question 9

even if you do survive mass extinction, if you are knocked down, you will eventually go extinct

Answer 9

Dead clade walking ( Jablonski)

Question 10

non-avian dinosaurs went extinct

half of genera to all life went extinct, thought to be gradual but fossil record didnt show that

Answer 10

Cretaceous-Paleogene

-iridium found- normally only common in asteroids

Question 11

hard glassy materials, crystalized from vaporized rock

-tiny impact diamonds

Answer 11

spinels

Question 12

90% of aquatic species 70% terrestrial
level of plankton dramatically decreased-plankton are a basis of the foos chain
radiolorians almost all gone Fusilinids gone

Answer 12

Permian Extinction

-reef gap

Question 13

slow, gradual process

has two processes, Cladogenesis and Anagenesis

Answer 13

Phyletic gradualism

Question 14

change due to branching speciation events

Answer 14

cladogenesis

-production of a clade

Question 15

change along a branch

Answer 15

anagenesis

one lineage gradually becomes something else

Question 16

long periods of relative stasis interrupted by relatively brief bursts of rapid change

Answer 16

Punctuated Equilibrium