Give examples of petravent elements?

1. Petrified wood: Fossilized wood that has turned into stone over time.
2. Petrified coral: Fossilized coral that has undergone the process of petrification.
3. Petrified palm wood: Fossilized palm tree wood that has become stone-like.
4. Petrified seashells: Fossilized seashells that have turned into stone.
5. Petrified bone: Fossilized animal bones that have become petrified.
6. Petrified leaves: Fossilized plant leaves that have undergone the process of petrification.
7. Petrified tree stumps: Fossilized tree stumps that have turned into stone.

- Ampholytic Surfactants: These surfactants have both hydrophilic and hydrophobic groups and can therefore interact with both water and oil.
- Phospholipids: These are lipids that contain a phosphate group and are a major component of cell membranes.
- Glycolipids: These are lipids that contain a carbohydrate group and are found in the outer membranes of bacteria and in plant cells.
- Lipopolysaccharides (LPS): These are complex molecules that are found in the outer membranes of Gram-negative bacteria and play a role in the pathogenesis of infections.
- Teichoic Acids: These are polymers of glycerol phosphate or ribitol phosphate that are found in the cell walls of Gram-positive bacteria and play a role in maintaining cell shape and integrity.