Which independent variable affected the organism’s health positively in each of the trials? Why do you think this occurred?

Please see below  

Explanation:

The variable that had the most affect was the salinity. The sea animals have a tough time trying to survive under highly saline sea water, as this upsets their internal environment as well, in turn affecting their bodily functions and overall health too. The reason behind this was probably that they were used to an environment of high levels of salinity and low levels of light.  

the cell theory states that all living things including animals, as well as plants, are made of cells.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: