Which of the Following Was NOT a Major Factor in Explaining

question 28

Multiple Choice

Which of the following was NOT a major factor in explaining the decline of death rates in the U.S.in the late 19ᵗʰ and early 20ᵗʰ century?

• A)urbanization
• B)improvements in sanitation
• C)improvements in medical treatments
• D)Both a and c are correct.

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Definitions:

Bony Vertebra

Structural elements forming the vertebral column in vertebrates, characterized by a more robust and ossified frame compared to cartilaginous or other types.

Chordates

A large phylum of animals that share a common feature of having at some stage in their life a notochord, a dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail.

Notochord

A flexible, rod-shaped support element found in all embryonic and some adult chordate animals, functioning as a primary axial skeleton.

Sound Production

The creation of sound, a process that involves vibration transmitted through a medium such as air or water, which is then perceived by hearing.