They felt that chemicals 'injected' into food and environmental factors such as increasing pollution as a result of excessive population growth may have some bearing on the increase in the disease.
(They; felt; that chemicals 'injected' into food and environmental factors such as increasing pollution as a result of excessive population growth) Context(They felt,List([0, 9))):(chemicals; injected; into food and environmental factors)
They felt,List([0, 9))
They chemicals
felt injected
that chemicals 'injected' into food and environmental factors such as increasing pollution as a result of excessive population growth
into food and environmental factors