How did new scientific knowledge the building of the panama canal? a. fewer workers got sick from malaria and yellow fever. b. radios workers stay in touch with their families. c. better nutrition led to more work being done by laborers. d. airplanes were able to deliver supplies more quickly.

The answer is A.

Fewer workers got sick from malaria and yellow fever.

A. Fewer workers got sick from malaria and yellow fever.

New scientific knowledge helps the building of the Panama canal because there was a reduction in workers who are becoming sick of yellow fever and malaria.  The Chief Medical Officer Colonel Gorgas, was among the first who have learned about the revelations associating with malaria and mosquitoes. Due to those interpretations, he succeeds in abolishing the cause of the disease which could able to decrease the number of workers getting infected.

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.

the answer is true!