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Evolution crossword

Teacher: plona
Across
The way things differ over time
The act, process, or accident of varying in condition
Largest animals that lived in the Jurassic period
Forms of life having traits that are better for survival
A form of life
A really short period of time marked by distinctive features
One of the oldest skeletons found by scientist
Deoxyribonucleic acid
DNA that provides info on what you inherit
Similarities and differences of a related organism
Down
A person from whom one is descended
Modern humans
A scientist who came up with the theory of evolution
The process of change over time
A record or account of ancestry and decent of a person
A change in a gene
A period of time marked by distinctive characteristics
A group of individuals having common characteristics
A smaller period of time marked by distinctive features