Which metaphor for aging does shakespeare use in sonnet 73? a. air b. choirs c. birds d. autumn

The correct answer is option D. Autumn.

The line 'When yellow leaves, or none, or few, do hang  Upon those boughs' states the presence of a few leaf on the branch of tree, by this line, the poet want to convey the message of the dullness of the old-age, which is similar to the autumn trees.

The line 'which shake against the cold' further confirms the autumn season, as in autumn season, the tree shed their leaves and a few leaves are left and that to are pale and faded. Also, through this line, the shaking of the leaves signify the difficulties in handling the situations during old age.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

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.