In what ways is plate tectonics related to the formation of Earth's crustal features?

Facial shaving brushes are either bulb-shaped or fan-shaped. an experiment is to be conducted to determine whether the lather thickness is the same for both types of shaving brushes. in previous studies, it was determined that shaving brush size (small, medium, large) is associated with lather thickness, but shaving brush type (wolf whiskers, maggard razors, frank shaving, and so on) is not associated with lather thickness. how could the experiment best be conducted? by blocking on shaving brush size by blocking on shaving brush type by blocking on shaving brush shape by blocking on lather thickness without blocking

Which of the following is not true about hydroelectricity a. use of gravitational force of flowing water b. its the most widely used renewable energy c. it has a high output of co2 that fossil fuels d. it has no direct waste asap

Which of the following would most likely be a preservationist, as opposed to a conservationist, approach to public land management? i. allowing unrestricted boat access to a lake ii. allowing atv use in all areas of public land iii. closing fragile sections of a park to tourists i only ii only iii only i and iii ii and iii