The knoblike swelling at the ends of axons are called?

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.

six grader is what i am ssorry

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"