If you are doing a lab in which you are recording the melting point of three metals, copper, zinc, and iron. What would be your independent variable(s) and What would be your dependent variable(s)? pls pls pls help

For frederick douglass’s address, “what to the slave is the fourth of july? ” (1852)1) does the speaker use fallacious reasoning or logical fallacies? use evidence from the text to support your answers. 2) how effective is the speaker’s response to counterclaims or alternate claims? use evidence from the text to support your answer

The story line remains the same. the kids live in what was then one of the remaining beachfront slums, down the coast from the expensive malibu area. the beach was ruled by surfers, but in the afternoon, when the waves died down, some of the surfers, or their younger brothers, fooled around on skateboards. one day, skip engblom, the shop owner, comes up with a key breakthrough, polyurethane wheels: "they grip." with the additional traction, the z-boys try skating the sides of the big, open drainage canal that runs through the area. then comes a brainstorm: because of a drought, the area's swimming pools were drained. the kids started "borrowing" pools when the owners weren't home, to skate the curved sides.” where did “the lords of dogtown” originally practice their tricks? a. the beach c. an open drainage canal b. empty pools d. none of these

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.