evidence for evolution

Question 1

homosapiens

Answer 1

the modern human species

Question 2

evolution

Answer 2

a gradual change in the characteristics of a species overtime

Question 3

binomial system

Answer 3

the system of namingorgansims using two latin words

Question 4

fossils

Answer 4

the remains of organisms from millions of years ago which are found in rocks

Question 5

how fossils form

Answer 5

when parts of organisms have not yet decayed (can happen when conditions needed for decay are absent)

if parts of the organism are slowly replaced by minerals during the decaying process

from the preserved traces of organisms

Question 6

problems with fossils

Answer 6

most life forms were soft-bodied organisms which very rarely form fossils.
fossils that did form have been destroyed due to changes in the earths crust

Question 7

the earliest evidence of animals using stone tools

Answer 7

3.3 million years ago. Scientists can work out the ages of different layers of rock. They then assume that a tool is around the same age as the layer of rock

Question 8

uses of the oldest stone tools

Answer 8

mainly used for killing animals and cracking nuts