E-o Crossword
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
 
 
Down: 2) all the organisms in an area and their relationships with each other and with the nonliving materials in the environment3) a scientific investigation that takes place in anatural setting5) the death of all members of a species9) a living thing whose cells contain a nucleus11) the organ system that removes waste from the body16) a model of the overlapping food chains in an ecosystem17) a kingdom of organisms made up of both single-celled and multicelled heterotrophic eukaryotes, including many decomposers Across: 1) a segment of DNA that determines a trait4)  a biological kingdom made up only of bacteria6) the organ of the female reproductive system system that transports eggs from ovary to the uterus7) the preserved imprint or remains of an organism8) the genes the genes an organism carries10) a period of geologoc time that begins after a mass extinction and that lasts ten or hundreds of millions of years12) a model that shows the transfer from one organism to another13) female sex cell14) change over time15) a muscular tube that connects the mouth to the stomach.17) the process in which sperm cell unites with an egg cell18) a model that shows a decrease in the amount of energy available at each successive level of a food chain19) a protein that speeds up a chemical reaction
 

 

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