Answer:
they also form rocks in earth surface
Well, there are two kinds of organisms: osmoregulators, that can regulate the level of salt and the salinity does not affect them (an example is salmon: for salmon this sentence is true. Generally, for most fish this sentence is true)
However, for some species, such shark - osmoconformers - this is false: they are affected by the salinity. in general I would conclude that This is false: the marine salinity DOES affect the fish (and other organisms) living there.
They have 46, instead of the usual 47.
The correct answer is bulimia.
Bulimia is an eating disorder where a person eats as much food as they can, only to throw up everything they have eaten - they induce themselves to vomit to get rid of all the food they took.
Anorexia doesn't necessarily involve vomiting. Hypertension is high blood pressure. Obesity refers to extremely overweight people.
Based on the given description above, the relationship between the crocodiles and the egrets shows a symbiotic relationship, particularly, COMMENSALISM. This kind of relationship exists when one specie benefits from and the other does not gain nor lose anything. Hope this answer helps.