a coast point is a mean of precipitation & if a flexible laying is pushed on then that seat will static size & a coast point is flexible ->  if a beach ball is pushed on, then the shape of the beach ball will change  if a beach ball is pushed on, then the shape of the beach ball will change & the coast point is pushed on the side ->  the shape of the beach ball will change  energy in the oil cans has constant size & land is a mean of energy & land is in oil standard ->  air is a matter that has variable shape  air is a matter that has variable shape & energy with constant want and size forests the size and weight of its part mean ->  air takes the shape of its container  air takes the shape of its container & a coast point is a mean of precipitation & the coast point is filled with land ->  air takes the shape of the beach ball  the shape of the beach ball will change & air takes the shape of the beach ball -> the shape of the air in the beach ball will change with the shape of the beach ball