Evolution/Extinction/Evidence

Question 1

What are fossils?

Answer 1

solidified remains or imprints of once-living

Question 2

What are constructed using fossils?

Answer 2

Fossil Record

Question 3

What is a fossil record also known as?

Answer 3

The historical sequence of life

Question 4

What are Paleontologists?

Answer 4

Scientist who look for fossils to help them reconstruct what happened in the past

Question 5

What is the Earth’s crust arranged in?

Answer 5

Layers of rock and soil stacked on top of each other

Question 6

Could fossils be any living organism?

Answer 6

Yes

Question 7

The deeper the layer, the older or younger the fossil?

Answer 7

The older the fossil

Question 8

What is the PA state fossil?

Answer 8

Trilobite

Question 9

What are Vestigial Structures?

Answer 9

Remnants of structures that had a useful role at one time but no longer do

Question 10

Why are there Vestigial Structures?

Answer 10

It suggests that the organism evolved from another life form where that structure played an important role.

Question 11

What are examples of Vestigial Structures?

Answer 11

Wisdom Teeth, Human Tailbones, Hind-limb bones in whale and some snakes

Question 12

What are Skeletal Structures?

Answer 12

Bone structures of mammals are very similar a common origin

Question 13

What makes someone have similar DNA with another person?

Answer 13

When they are closely related.

Question 13

What organisms have DNA?

Answer 13

ALL ORGANISMS!

Question 14

How identical is a chimp’s gene and a human’s gene?

Answer 14

98%

Question 15

How identical is a mouse’s gene and a human’s gene?

Answer 15

70%

Question 16

What are the basic unit of life?

Answer 16

Cells

Question 17

What do all living organisms start as?

Answer 17

A single cell

Question 18

What is a geologic time scale?

Answer 18

An outline of history of life on Earth

Question 19

What are large blocks of time divided called?

Answer 19

eras

Question 20

What are eras characterized by?

Answer 20

The animal that dominated the Earth at that time.

Question 21

How many percent of species that ever existed are now extinct?

Answer 21

99%

Question 22

What are some natural causes of extinction?

Answer 22

Climate change, Pollution, Disease

Question 23

What also happens during Extinction?

Answer 23

evolution of new species that usually quickly fill in the space another species’ extinction creates

Question 24

What is background extinction?

Answer 24

The continual extinction of species (basically slowly dying)

Question 25

What is mass extinction?

Answer 25

The accelerated extinction rates that sharply reduce the diversity of life on Earth (IMMEDIATE!!!)

Question 26

What did continents used to be?

Answer 26

A single landmass called pangaea

Question 27

Where are the organisms that evolved before the split may be represent on today?

Answer 27

On all present continents

Question 28

Where are the organisms that evolved after the split may be represent on today?

Answer 28

Only found in certain places