The main function of a plant cell wall is to protect the cell.
Earwigs, slugs, and snails eat annual flowers out of gardens.
The mantle is composed of dense<span>, rocky material which ranges from being virtually solid near the </span>lower<span> boundary with the </span>core<span>, to more squidgy towards the boundary with the overlying </span>layer<span>, the crust . Mantle material is </span>less dense than<span> the </span>core<span>, but still </span>denser than the outer layers<span> of the earth.</span>