Answer:
random but okay yes
Explanation: very hot *thumbs up*
Answer:
True.
Explanation:
in the early 1900s development of Salvarsan, an arsenic-based drug to treat syphilis.
Answer:
A. selective pressures that favor certain individuals
Explanation:
B. Using fewer fossil fuels, such as gasoline for a car, reduces the emission of harmful pollutants into the air
