The united states government limits the use of certain pesticides through laws passed in the endangered species protection program. which is the most likely reason to enforce laws that limit pesticide use? a. some pesticides are expensive. b. some pesticides can harm non-targeted species. c. some pesticides fail to control insects. d. some pesticides give off foul odors.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.