Scientific ocean exploration began in the 19th century, using wooden sailing ships. At that time, explorers had none of the technological sophistication and tools available today. A comparison of modern-day exploration with the late 19-century journey of the HMS Challenger<span>illustrates the progress that science has made in ocean exploration.</span>
All of them Plays an equal and important role to support life on Earth..
Santiago is the name of Chile's capital and largest city, <span>sits in a valley surrounded by the snow-capped Andes and the Chilean Coast Range. </span>
