Which statement about ddt best shows how science has been impacted by society?

a. ddt led to insect resistance.
b. ddt was considered harmful and was replaced by other pesticides.
c. ddt was the first modern insecticide.
d. ddt was used in wwii to control malaria and typhus.

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Which is one step that teens can take to advocate for food security in their communities? ask local gyms for free memberships. visit their mayors to present ideas on how to increase the availability of local yoga classes petition parks departments for walking trails. write letters to the editor of the local newspaper about a lack of full-service grocery stores.

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