2021General ScienceEnvironment and EcologymediumWhich of the following is correct sequence of ecosystem in order of decreasing productivity?(a)Ocean, Lakes, Grasslands and Mangroves(b)Mangroves, Oceans, Grasslands and Lakes(c)Mangroves, Grasslands, Lakes and Oceans(d)Oceans, Mangroves, Lakes and GrasslandsShow answer Save Listen Share