Climate and pollution stresses, and their interactions with pests, humans, and other environmental changes are likely to cause unprecedented cumulative effects on northern forest ecosystems.
(Climate and pollution stresses, and their interactions with pests, humans, and other environmental changes; are; likely to cause unprecedented cumulative effects on northern forest ecosystems) (Climate and pollution stresses, and their interactions with pests, humans, and other environmental changes; to cause; unprecedented cumulative effects on northern forest ecosystems)
Climate and pollution stresses, and their interactions with pests, humans, and other environmental changes Climate and pollution stresses, and their interactions with pests, humans, and other environmental changes
are to cause
likely to cause unprecedented cumulative effects on northern forest ecosystems
unprecedented cumulative effects on northern forest ecosystems