Ahydroelectric plant requires a dam to be built across a river. which of the following is a direct environmental cost of building the dam?

a. loss of scenery

b. property tax increase

c. water runoff

d. running equipment

a. loss of scenery

Explanation:

A dam construction is likely to change the ambience of the environment. It will affect the life of biotic community living in the river and near the river shore. It will lead to the decline in the population of trees, plants and animal species. Hence, the natural diversity of an area will be affected.

Also the natural flow of water will be affected by the construction of dam. The dam is the human construction. Therefore, the natural make up of the area will be affected. This will be the environmental loss due to drastic and unsuitable change in ambience.

On the basis of the above explanation, A loss of scenery is the correct option.

43.452

step-by-step explanation:

284 times .153 = 43.452

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.