When a major resource, such as water or nitrogen, is in short supply, plants may compete with each other for use of the resource.
(a major resource, such as water or nitrogen; is; in short supply) (plants; may compete; with each other; for use of the resource; T:When a major resource, such as water or nitrogen, is in short supply)
a major resource, such as water or nitrogen plants
is may compete
in short supply
with each other for use of the resource T:When a major resource, such as water or nitrogen, is in short supply