HELP ASAR Why are individuals in many developing countries susceptible to diseases such as polio and pertussis? A. because of poor hygiene
B. because of genetic variation
C. because of a lack of vaccination
D. because of a lack of education

What materials must dams have to produce electricity, and what must occur?

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In cellular biology, what is the definition of the word specialized? te o a. carried across the cell membrane by a specific protein a o b. a structure within a eukaryotic cell that performs a specific function o c. adapted to a specific function or condition es essere beste ser bendere s b tele ee o d. containing unique dna ser eeseen les, e nde este ses see ste submit e