An ecosystem resists change because it is in a state of

In an ecosystem,the vulture is a/an .......

An ecosystem has two components:

In a pond,we see plants which are free-floating; rooted-submerged; rooted-emergent; and rooted with floating leaves. Identify the type of plant for each of the following:

Plant Name	Type
$(1)$ Hydrilla	....................
$(2)$ Typha	....................
$(3)$ Nymphaea	....................
$(4)$ Lemna	....................
$(5)$ Vallisneria	....................

The largest ecosystem of the world is:

$A$ pond is defined as a