WILLIAMS 30 Crossword
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
 
 
Down: 1) an organelle that captures the energy of sunlight2) all the different populations that live in the same place at the same time3) the variable that may change in response to the independent variable5) a thin, flexible barrier that surrounds the cell's contents6) how an organism changes during its lifetime8) an organism that gets its energy by eating other organisms9) a transport system that uses blood to carry nutrients and oxygen to the cells of the body10) the process in which oxygen is combined with food to release energy13) a consumer that eats only or mostly animals14) a tiny blood vessel that connects an artery to a vein and that exchanges substances such as gases and nutrients between the blood and body cells15) the group of organs that break food down into molecules that are small enough to be absorbed by and transported throughout the body18) a sheetlike muscle beneath the lungs that expands and contracts the chest cavity to control breathing21) a tightly coiled structure found in the nucleus of most cells that contains the organism's genetic information25) the basic unit of structure and function in all organisms Across: 4) a process in which bacteria remove nitrogen from nitrogen compounds and change it back into nitorgen gas, which is returned to the atmosphere7) a consumer that feeds on wastes or remains of other organisms, and returns matter to the environment as it breaks down those remains11) a relationship in which multiple organisms try to use the same resources12) grouping of objects or organisms based on similarities and differences between them13) a scientific theory which states that all living are composed of one or more cells,the is the basic unit of structure and function in all living things and all cells come from existing, living cells16)  a flexible connect tissue that is part of the skeletal system17) the molecule that determines what traits are passed from one generation to the next19)  a factor that is kept constant during an experiment20) information gathered during a investigation22) the process that breaks down food molecules into simpler substances23) the body system made up of the brain and spinal chord24) the fluid the occupies most of the space with in a cell26) a tool that can be used to determine the identity of something by using observations to answer a series of questions27)  the type of muscle tissue that makes up the heart28) an explanation of what the evidence collected during an investigation shows29)  a symbiotic relationship in which one organism benefits and the other is not effected
 

 

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