¿Crees que el impacto ambiental de lo seres humanos es negativo, por qué? ​

Explanation:

la el impacto ambiental porque estamos alojan el planeta Tierra en los ríos y la contaminación de las fábricas y los desechos de las botellas y de los plásticos Durán 500 años y arriba soles y el humo de los carros que estamos contaminando el aire oxigenada

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.