What are 10 chemicals or other items that are poured down the bathroom/kitchen drain or emptied into water sources
such as lakes, streams, rivers, and groundwater?

the sphincter muscles at the end of the digestive tract is the anus.

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.

. the sierra madre fault zone of southern california

. the san andreas fault california