Aphids can feed in the leafy treetops (or tree canopies). ants are usually not abundant in the tree canopies unless aphids are also present. you introduce aphids to an area of the tree canopy and survey the abundance of ants over time.
a. true
b. false

1. the best control for your experiment in the question directly above is a tree in which you add a second ant species and you measure the abundance of the first ant species over time.
2. you continue yor experiments by taking one of the trees in the canopy and removing all of the ants. if the ants and aphids are in a mutualistic relationship that strongly benefits them both, you expect the aphid population will decrease in size in response to the lack of ants.
3. you would expect ant abundance to decrease over time.
, !

1. The best control for your experiment in the question directly above is a tree in which you add a second ant species and you measure the abundance of the first ant species over time...FALSE

2. You continue yor experiments by taking one of the trees in the canopy and removing all of the ants. If the ants and aphids are in a mutualistic relationship that strongly benefits them both, you expect the aphid population will decrease in size in response to the lack of ants...TRUE

3. You would expect ant abundance to decrease over time...FALSE

Explanation:

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.