1- Explica el paso desde los unicelulares a los pluricelular en un texto de 10 renglones, que contenga entre sus palabras los siguientes conceptos: ser unicelular- relación superficie/volumen- colonia- especialización- ser pluricelular- sistemas de transporte-
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explanation:

i can't see the full page, therefore, can't answer it

explanation:

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.