The answer is steamboats! The first steamboat came year 1807 and was invented by John Fitch:)
C. Clay soil has a higher porosity than sandy soil.
Explanation:
Maller soil particles have smaller pore spaces, but a greater number of them, which leads to higher surface tension and high % porosity.
Explanation:
Erosion erodes rocks and such to form sand. Deposition moves the sand to another place ro form the dunes.
