Without staining them you wouldn't be able to see them
They both have a nucleus along with other complex membrane bound organelles.
Answer;
-Temperature
Explanation;
-A biome is a major, geographically extensive ecosystem, structurally characterized by its dominant life forms. Biomes are classified by the amount of rain they receive and what the temperature level is. Climate variation with special emphasis on moisture or precipitation may be used to differentitate biomes into various types.
-Terrestrial biomes are usually distinguished on the basis of the major components of their nature or climax vegetation, while aquatic biomes, especially marine ones, are often characterized by their dominant animals.
