Im not really sure , but it might have something to do with polar chemical compound <span />
The answer I came up with is Echinoderms and Chordates.
Happy studying!
A complex chemistry is most related to maintaining a stable internal environment.
The hormone calcitonin, which is produced by the parafollicular or C cells of the thyroid, has the opposite effect on blood calcium levels as does PTH. I hope this helps! : )
Answer: if they help you break down food
Explanation:
Mutualism is a biological relationship between TWO or more organisms of different species (inter-specie) in which one or more benefits.
A good example is bacteria in the human intestine that helps to break down cellulose contained in food, thus benefitting humans.
