The source of energy shown in the image is (renewable, non renewable, polluting) a drawback of building a dam is that (it will destroy ecosystems, it requires fossil fuels, it won’t be useful for irrigation)

First blank: renewable

Second blank: destroy ecosystems

Explanation:

Dams are man-made structures that are used to store water for multiple purposes like irrigation, supplying water to an area and power generation. They are also used as a flood control measure.

However, as it is a man-made structure, it can also alter natural habitats and ecosystems. Dams collect water, which means it floods a large area, destroying the ecosystem that used to exist. Also, dams also disturb the natural flow of the river, which many animals and plants rely on. This can be harmful to them.

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.