The part of the sentence "is posing new challenges" is correct and usable in written English
You can use it when referring to something that is posing a difficult situation. For example: "The pandemic is posing new challenges for governments around the world."
In announcing the request on 3 February, Secretary of Agriculture Tom Vilsack noted in a statement that "food production must increase to meet the demands of world population projected to pass 9 billion by 2050," and that climate change and other factors are posing new challenges to farmers.
In conclusion, the changing nature of jobs, the middle class, and the American dream are posing new challenges for the United States.
A senior Pentagon health official, Warren Lockette, said earlier this summer that while dramatic advances in battlefield medicine are saving many more lives, those with severe and complex wounds are posing new challenges for policymakers.
This trend in landownership has been posing new challenges to the Kertoraharjo subaks from the mid-1990s onwards.
The Afroalpine ecosystems of Ethiopia have been used for millennia under unrestricted access by the surrounding communities (Ashenafi and Leader-Williams 2005; Ashenafi et al. 2012), but the rapidly growing human populations are posing new challenges.
Changing UK immigration and asylum trends – in particular a greater net inflow of migrants from New Commonwealth and non-Commonwealth Africa, Asia, and Latin America [ 1] – are posing new challenges for service providers [ 2], especially in inner-city London to which migration is greatest [ 3].
The recent turn in research, technology and innovation (RTI) policy towards challenge-led strategies is posing new demands to Foresight methodology.
The advent of the smart phone and the expected explosion of Machine-Type Communication (MTC) are posing new and unexpected challenges.
Regional warlords are feuding, posing new challenges to President Hamid Karzai's government.
