In his first inaugural address, how does Jefferson develop the central idea that it is important for the nation to work toward unity?

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.