The first layers of earth are very loose, unconsolidated layers called soil, which is pretty easy to dig into, but as we go deeper we reach the bedrock, which is the hardest part of the soil profile, which is made of hard rocks and matter.This makes it harder to dig more and more deeper.
Depending on the organelles present and the unique features can give clues about the function, for example, muscle cells contain higher concentrations of mitochondria
