The highest level of organization a sponge has are Cells.
Israel has the highest number of scientists per capita in the world. This is due to its strong emphasis on research and development, as well as its high investment in education and innovation.
The highest level of organization that ecologists study is the entire biosphere itself.
Very big... Scientists probably don't have an answer for something like that. But, the highest known number, which is a number (infinity is not), is either google, google plex, or centillion.
Olympics
organism
123ewe
The Biosphere!!
Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.Find the highest number, eliminate it from the list, find the highest number of the remaining numbers.
organism
Organisms
There is no highest number, highest prime number, or highest composite number. Therefore, there can't be a second-highest, third-highest, etc., of any of these types of numbers, either.