Evolution Crossword

Across
1.	gets credit for explaining how evolution happened
3.	a measure of how all the adaptations of an organism help it survive
7.	the normal way most things grow and age, such as science teachers losing their hair
9.	_______ breeding of dogs gave us many different breeds
10.	_________ selection says the fittest have a better chance to live
11.	whales have _______ bones in their flippers
12.	same parts in the same place with the same or different jobs
15.	this kind of evolution everyone agrees happens
18.	__________ have vestigial structures that disappear before birth
20.	_________ is a mistake made copying DNA
21.	your fitness can change if you move to a new __________
22.	useless parts
23.	differences that are inherited

Down
2.	a variation that helps one survive in ones environment
3.	the shorter the generation time is the ______ evolution is
4.	the theory that species change over time
5.	the role an organism plays in its environment
6.	different parts or built very differently but the same job
8.	a diagram showing how different organisms are related
13.	the opposite is punctuated equilibrium
14.	__________ is when organisms struggle to get the same stuff
15.	this kind of evolution results in a new species
16.	older fossils are found _______ in the rocks
17.	______ the kinds of rocks where fossils are found
19.	____ reproduction results in faster evolution than asexual reproduction
20.	a caterpillar turning into a butterfly is an example.