The winter evening settles down With smell of steaks in passageways.
Six o'clock.
The burnt-out ends of smoky days.
And now a gusty shower wraps
The grimy scraps
Of withered leaves about your feet
And newspapers from vacant lots;
The showers beat
On broken blinds and chimney-pots,
And at the corner of the street
A lonely cab-horse steams and stamps.
And then the lighting of the lamps.

Poem^

See below:

Explanation:

It asks for 3 examples of imagery about trash and pollution.

a lonely cab-horse steams and

stamps- I don't think this is one. A horse is not trash, even if it is lonely.  

broken blinds and chimney-pots-This is one of them. "Broken" blinds indicate trash and overusage.  

the winter evening settles down-No. This is talking about weather.  

newspapers from vacant lots-I think this is one of them. The term "vacant" gives the hint that it is trash, since the newspaper is no longer in use.  

and then the lighting of the lamps-I don't think so. This is giving general imagery about the setting. It has nothing to do with trash or pollution.  

grimy scraps of withered leaves-I think this is one of them as well. The word usage here obviously states that these leaves are old, fallen off the tree, and trash.

I hope I could help!

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.

c hydrophobia is the answer