Biology Crossword
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
                                             
 
 
Down: 1) The development of new types of organisms from preexisting types of organisms overtime2) A trait that makes an individual successful iin it's environment4) The selective breeding of organisms (by humans) for specific desirable characteristics5) Something in the air that spontanously caused life to grow6) A measure on an individual's hereditary contribution to the next generation8) A group of photosynthetic, unicellular prokaryotes9) The process by which two or more related but reproductively isolated populations become more and more dissimilar11) The process by which unrelated species become more similar as they adapt to the same kind of environment12) Anatomical structure in one species that is similar in function and appearance, but not in evolutionary origin, to another anatomical structure in another species14) The remains of traces of an organism that died long ago17) The evolution of two or more species that is due to mutual influence, often in a way that makes a relationship more mutually beneficial19) A gas molecule that is made up of three oxygen atoms Across: 3) A group of unicellular organisms that live in extremely harsh environments7) A structure in an organism that is reduced in size and function and that may have been complete and functional in the organism's ancestors10) Length of time it takes for 1/2 of any size sample of an isotope to decay to a stable form13) Plant-like structures in the ocean that give off oxygen15) Branching diagram that shows the relationships by ancestry between different species or other taxonomic groups16) Life appears from non-living things18) A mutually beneficial relationship in which one organism lives within another20) Anatomical structures that occur in different species and that originated by heredity from a structure in the most recent common ancestor of the species21) The process by wich individuals that are better adapted to their environment, survive and reproduce more successfully than less well adapted individuals22) All living things come from other living things
 

 

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