Turtles ahoy ( a real implementation of the scientific method)

need all the answers now !

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary

The source of energy shown in the image is (renewable, non renewable, polluting) a drawback of building a dam is that (it will destroy ecosystems, it requires fossil fuels, it won’t be useful for irrigation)