Jd science Crossword
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
 
 
Down: 1) was a naturalist who proposed and provided scientific evidence that all species of life have evolved over time from common ancestors through the process he called natural selection. 2) the breeding of plants and animals with desired traits to attempt to produce off spring with these same traits. 3) survival of the fittest organisms that are the best adapted to their environment and the ones that will live long enough to reproduce and pass on their favorable adaptations 4) a random change to a gene that results in a new trait 6) the most specific classification of living things 9) the complete body of fossils that shows how species and ecosystems change over time11) the process of becoming a fossil 12) an explanation that ties together many hypothesis and observations. 14) the process of natural selection producing a new species out of existing species over thousands or millions of years15) the change in population of a species over time. Across: 5) a fossilized mark that is formed in soft sediment by the movement or actions of an animal. 7) a trait that increases the chances that an organism will survive and reproduce 8) a fossil found in a narrow time range but widely distributed around the earth; used to date rock layers 10) evidence of past life preserved in rock13) The evolutionary termination of a species caused by the failure to reproduce and the death of all remaining members of the species; the natural failure to adapt to environmental change. 16) the change over time of living organisms 17) a marine organism that is an example of an index fossil
 

 

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