The answer is: "differences in temperature and salinity" .
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(based on the assumption that we are referring to the world's ocean).
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Answer:
cell
tissue
organ
organsystem
organism
population
communities
ecosystem
biosphere
Explanation:
please mark me as a brainlist...
They are called circadian rhythm. Circadian rhythms are physical, mental and behavioral changes that follow a repeated daily cycle. They are usually biological processes that display an oscillation of about 24 hours and occurs in animals, plants and even cyanobacteria. The process responds to changes in light and darkness in the surroundings of an organism.
No we dont. us males have one less.
Gastroenterologist specializes in the treatment of diseases of the rectum and anus