Plants take in carbon when they take in carbon dioxide and animals take in carbon when they eat the plants 
(Plants; take; L:in carbon; T:when they take in carbon dioxide and animals take in carbon) (they; take in; carbon dioxide) (animals; take; L:in carbon; T:when they eat the plants) (they; eat; the plants)
Plants they animals they
take take in take eat
L:in carbon T:when they take in carbon dioxide and animals take in carbon
carbon dioxide
L:in carbon T:when they eat the plants
the plants