The phrase "as populations grow" is correct and usable in written English.
It can be used when discussing changes, trends, or implications related to increasing population numbers.
Example: "As populations grow, the demand for resources such as food and water will increase significantly."
Alternatives: "as the population increases" or "with population growth".
As populations grow more prosperous, vegetarian life styles often yield to a Western diet, with all the disasters that implies.
Mr. Sanyal is skeptical about one widespread forecast — that demand for health care will expand rapidly as populations grow.
"Forever" is only achieved when districts show they can sustain these investments over time as populations grow, water resources are threatened, economies change and infrastructure ages.
People in Africa are moving to urban areas in large numbers as populations grow where children become costly items rather than a useful pair of hands.
And I'm worried that those conflicts are going to get worse as populations grow, as demands for scarce water resources grow and we don't really have the approaches for reducing those risks.
The question now: As populations grow richer, as the globe grows smaller and adventure becomes more of a commodity, are people getting a bit carried away, risking life and limb for mere thrills?
But as populations grew, rivers were tapped and diverted for irrigation, industry and canal transport.
Also, as populations grew, the quantity of wastewater generated rose rapidly and the deteriorating quality of this huge amount of wastewater exceeded the self-purification capacity of the streams and river bodies.
The evolution of practices naturally changed as populations grew and sites for disposal became less acceptable.
It took time to realize that Thomas Malthus's eloquently expressed fears that population would outrun subsistence were exaggerated and that, as population grew, national production would also grow.
