What is a structure built parallel to the shore that shields the coast from breaking waves? a. groin b. seawall c. wave barrier d. tombolo

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

In russia which of these challenges affects the transportation of both petroleum products and other goods?

What effect has the drug trade had on some governments in middle and south america? a. it has funded political instability. b. many nations have created democratic governments. c. many governments have allowed the drug trade to fund local programs. d. it has funded political stability.