Ecological succession is ______ and ______ change in species composition.
Orderly and sequential
Unpredictable and orderly
Gradual and unsequential
Sequential and disorderly
Select the incorrect match.
$I.$ Sedimentary nutrient cycle-Nitrogen cycle
$II.$ Pioneer species-Lichens
$III.$ Secondary succession-Burned forests
$I V$. Pyramid of biomass in sea-Upright
Which of the following ecosystems would be most stable
An ecosystem resists change because it is in a state of
Savannah is found commonly in
Mark the correct pair