The process of petrifaction can include which of the following: • Silica from the ash soaks into the wood, turning it to stone when it dries
• Volcanic ash blows into the water
• Living plants like trees can be submerged in water
• All of the above

Help me please :(

When a plant cell is placed in a hypotonic solution, it becomes firmer and more rigid. A hypotonic solution is the one, which contains less concentration of solute and more concentration of solvent ( water) outside the cell as compared to inside.

Explanation:

there you go :)A hypotonic solution is the one!