A packaging plant manager wants to know if lowering the air temperature in the packing room will cause workers to increase productivity (number of products packed). Workers in two equivalent packing rooms participate in the study. One room is maintained at 65°F, while the other room is left at the usual temperature of 76°F. Independent Variable
Dependent Variable ¬
Experimental Group
Control Group

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens