A sub-woofer is a type of speaker that plays only the very low notes in a song or movie. What types o frequencies would you expect to be able to hear from a sub-woofer?

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist