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The differences is the size.
you group them by their size habitats and where they come from
These organisms use simple diffusion as a transport mechanism.This is possible because of the small size of the organisms. Diffusion is effective over small distances but as size increases it becomes less and less efficient.
No, all multicellular organisms have the same size cells.
Populations tend to increase in size.
There shape,size,and color. ; )
biomes, also referred to as ecosystems, is the whole community of similar factors such as climate & organisms (plants, animals, etc. etc.)Habitat size is basically the size of the place where a population lives.a population is a group of living organisms of the same kind.if you need more clarification, check out this website..http://www.fi.edu/tfi/units/life/habitat/habitat.html
some of the difrrences is the size shape and the way they work
Geographic location, habitat preference, diet, conservation status, migratory behavior, songs, plumage, size, shape!
No that is to do with density differences not size differences,
A Macro Habitat is a Habitat fit for normally size animals not small creatures.
well i know that multi cellular organisms have a much more complecated structure and process but a single cellular organism has a process called the cellular resportary syestem and this works well but mostly on small single celled organisms becasue if you had a large organisms the size or dogs then by the time the oxygen from the H2O would get to the nuclei the paramecium or what ever organism you are specifying it would die that is why single celled organisms are so small...size matters
The differences in size has to do with the function of the vessels; where they came from and where they are going.
200 feet
depends on the size. they can grow to the size of there habitat's.
Common differences are size and color.
THEY ARE SORTED BY SIZE