natural selection

Question 1

what is evolution

Answer 1

the process of species gradually developing

Question 2

what is the main evidence there is for evolution

Answer 2

fossils

Question 3

what is a fossil

Answer 3

it is a trace of plants or animals that have been preserved

Question 4

how do organisms evolve

Answer 4

through natural selection

Question 5

what is natural selection

Answer 5

when species slowly evolve to become better adapted to its environment

Question 6

how did peppered moths change during natural selection

Answer 6

Originally, most peppered moths had light-coloured wings, which helped them camouflage with the tree bark. However, as industrial pollution darkened tree trunks with soot, dark-coloured moths gained a survival advantage because they were better camouflaged from predators. Over time, the frequency of the dark-coloured moths increased.

Question 7

what is the 1st step to natural selection

Answer 7

species show variation in their genes

Question 8

what is the 2nd step in natural selection

Answer 8

the organisms with the best characteristics adapted to the environment will survive. less well adapted organisms will die. this is knows as survival of the fittest

Question 9

what is the 3rd step to natural selection

Answer 9

the genes from the surviving organisms are passed onto their off spring, which they then inherit the features

Question 10

what is the final step to natural selection

Answer 10

this process is repeated multiple times (natural selection and survival of the fittest) and may lead to a development of a new species