Given below is a simplified model ofphosphorus cycling in a terrestrial ecosystemwith four blanks $(A-D)$.Identify the blanks.
$A$-Rock minerals, $B$-Detritus, $C$- Litter fall, $D$-Producers
$A$-Litter fall , $B$-Producers, $C$- Rock minerals, $D$-Detritus
$A$-Detritus , $B$-Rock minerals, $C$- Producers, $D$- Litter fall
$A$-Producers , $B$-Litter fall, $C$- Rock minerals, $D$-Detritus
The Great Barrier Reef along the east coast of Australia can be categorised as
The part of earth and atmosphere supporting life is
A natural region characterised by hot summer, warm winter and treeless vegetation
The changes that occur in successive seral stages to reach a climax community are
$I.$ changes in the diversity of species of organisms
$II.$increase in the number of species and organisms
$III.$ increase in the total biomass
Choose the correct option
In biogeochemical cycles, chemicals pass through