The cell theory was developed as a result of several different scientist's contributions. In 1838, the botanist Choose.. concluded that all plants are composed of cells. Shortly after, the zoologist Choose... came to the same conclusion about animals. In 1855. Choose...
physician who had been studying how diseases affect living organisms, proclaimed that cells come only from other cells.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.