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>
They are based on Islam or Christianity
C I think hope this helps
Because light travels more than 800 thousand times as fast as sound does.
D. They don’t have a three branch government. The UK had a monarchy. ‘Mercia
