Which statement best describes long-term environmental changes? They occur suddenly. They do not typically cause changes to DNA. They cannot occur gradually. They can occur anywhere from thousands to billions of years.

They can occur anywhere from thousands to billions of years.

explanation:

they can be good for the ecosystem

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.