essay on survival of organisms depends on regulatory mechanisms at various levels?

Answer 1

It does.

And also on the environment ... and how the regulatory mechanisms maintain homeostasis. And if the environment overwhelms the regulatory mechanisms ability to maintain homeostasis the organism may not survive.

Answer 2

i don't think of that there is any organism in the international that would not remember on water for survival; there are creatures that would proceed to exist with little water, however the completed loss of it for extremely long sessions of time will ultimately consequence interior the demise of that organism. All animal and plant cells (and bacteria) incorporate water in super proportions;the water lost in distinctive tactics would desire to get replaced,or the cellular dies.