Explain what happened after the last of the Four Rightly Guided Caliphs died.

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

Astudent is revising the sentence below: i know brendan was upset, but i feel he overreacted. you would have thought he'd just lost his best friend, the way he would bemoan his fate. based on the context of this sentence, which is the best synonym for bemoan? a. complain: express dissatisfaction or annoyance b. grieve: cause distress to someone c. nag: annoy with persistent fault-finding d. provoke: stimulate or incite

Arrange the following in order from the shortest wavelength to the longest wavelength. visible light gamma rays radio waves x-ray waves microwave infrared