Hydrothermal vents are found deep on the ocean floor. Despite the harsh conditions, life has found a way to thrive here. Giant tube worms grow around these vents. In the absence of sunlight, a different way of obtaining energy is needed. Chemosynthetic bacteria live inside the tissue of the tube worms providing them with food. In return the bacteria has a place to live. This is an example of which biological interaction? Please don't just take points.

feral cats are estimated to eat tens of millions of native animals each night in australia

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

the glands which are associated with each description is given below:

the answer would be..

b. sucking