Many people recycle paper cardboard cans and bottle is this an example of an activity that will the ecosystem be sustainable

An earthquake’s epicenter can be determined from arrival time data recorded on a(

At first after world war ii, japan’s factories produced goods that were used by the japanese government poorly made toys and novelties high-quality cameras inexpensive motorcycles

After railroads, the next revolution of transportation came with the development of (a) automobile (b) telegraph (c) steam engine