absorption                                                                                                                                            

amplitude                                                                                                                                            

classification                                                                                                                                        

commensalism

consumer

decomposer

eclipses (solar/ lunar)                                                                                                                               

energy transformations                                                                                                                               

extinction                                                                                                                                            

food web                                                                                                                                             

forms of energy

fossils                                                                                                                                              

frequency                                                                                                                                             

heat flow                                                                                                                                            

mutualism                                                                                                                                             

nuclear power                                                                                                                                        

parasitism                                                                                                                                           

producer

reflection                                                                                                                                            

refraction                                                                                                                                           

relative age                                                                                                                                          

seasons                                                                                                                                              

sedimentary rocks                                                                                                                                    

tides                                                                                                                                                 

universe components                                                                                                                                  

wave                                                                                                                                                  

wavelength