Some rivers and seaports in Russia can freeze for six to nine months out of the year. Predict how this could affect trade and travel in Russia and how Russians may try to overcome this obstacle.

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.

What is most often given a value of zero to describe an object’s position on a straight line? displacement reference point distance ending location

Where are most of the major earthquakes in relationship to the crustal plates?