How did tenements contribute to the spread of disease in eastern cities? Tenements were overcrowded dwellings that lacked proper sanitation.
Tenements were constructed from old ship and factory parts that contained toxins.
Tenements were filled with immigrants who brought new diseases from Europe.
Tenements were used to store grain that was infested with vermin.

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

What might the temperature be during a severe winter

Which action best describes how constituents can influence local and state government officials? a) not voting b) door to door c) withholding campaign funds eliminate d) phone, email, or office visit