are placed on dangerous machinery to detect motion, light, heat, pressure, or another stimulus. Their presence helps protect operators from injury while working on machines.

Which description best describes florida's legislative branch of government? a) this branch is divided into two houses and is responsible for creating state laws. b) this branch is responsible for collecting taxes and budgeting government expenses. c) this branch is made up of cabinets to carry out laws and is led by the governor. d) this branch is responsible for protecting citizens' rights and liberties and interpreting laws.

Which at first gave the south an edge in the civil war? a. a better-equipped army b. the invention of ironclad ships c. the drafting of slaves into the army

Which option below best represents what is included in the calculation of the united states gross domestic product (gdp)? a. 1 b. 2 c. 3 d. 4