Evolution: Natural Selection and Speciation Crossword
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
 
 
Down: 2) A concept of natural selection that states that genetic differences occur within a species as a result of new gene combinations passed down from parent to offspring. 3) A concept of natural selection that states that in order to survive each species must give birth to more offspring at any given time than the number of offspring that die. 4) The process in which inherited characteristics within a population change over generations such that new species sometimes arise. 5) A concept of natural selection that states that organisms compete for resources such as food. 8) A characteristic that improves an individual’s ability to survive and reproduce in a particular environment. 9) A group of organisms that are closely related and can mate to produce fertile offspring. 11) The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. Across: 1) A naturalist who noticed differences in species in different areas of the world. These observations lead him to believe adaptations occur gradually creating differences within a species and eventually new species altogether. 6) the creation of new species 7) the ability to not be affected by harmful substances 10) A concept of natural selection that states that organisms that are better equipped to survive within their environment have a greater chance at having more offspring.12) Populations are all the organisms that both belong to the same group or species and live in the same geographical area.13) the process through which organisms that are better adapted to their environment survive and reproduce more successfully than less well adapted organisms.
 

 

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