I believe the nuclear membrane
Answer:
Homeostasis is the ability to keep a stable internal state, despite changes in the environment. All living organisms must regulate their internal environment to process energy and survive. Hope it helps
<span>In marine vertebrates, the gill arches use the external gas exchange. The water holds less oxygen.
The ribs in terrestrial vertebrates have enclosed respiratory surface which is inside the body and comes as paired lungs.
Kidneys are efficient in excretion of regulation of water and nitrogenous wastes. Their reproduction is normally sexual with separate sexes.</span>
A Thermocline is the temperature of water, while Pycnocline is the density of water. Both are a type of ecoline. I'll update if you need more information.