Which of these shows the correct hierarchical sequence? organs ► cells ► tissues ► organ systems

cells ► tissues ► organs ► organ systems

organ systems ► tissues ► cells ► organs

tissues ► cells ► organs ► organ systems

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points