Como se liberan a la atmosfera, los hidrocarburos procedentes de la quema de combustibles fósiles generan ozono troposferico. Por lo tanto, ¿son contaminantes primarios o secundarios?

How do energy and matter move through an ecosystem? both energy and matter unidirectionally flow through an ecosystem. both energy and matter cycle within an ecosystem. matter unidirectionally flows through an ecosystem, whereas energy cycles within an ecosystem. energy unidirectionally flows through an ecosystem, whereas matter generally cycles within an ecosystem.