With populations expected to grow in each of these river basins by between 40 and 70 percent over the next 30 years, there will be increasing competition for a limited amount of water.
(populations; expected; ) (populations; to grow; L:in each of these river basins; T:by between 40 and 70 percent over the next 30 years)
populations populations
expected to grow
L:in each of these river basins T:by between 40 and 70 percent over the next 30 years