a)
- Project; projected
- decreased; decrease
- appealed; appeal
- recorded; record
- permits; permitted
b)
- The environmental group Ocean Project has projected that sea levels will rise one metre in the next fifty years.
- Fortunately, malaria has decreased in recent years, and the decrease is due to the use of nets and pesticides.
- When a major charity appealed for donations to help the deaf, their appeal was broadcast mainly via radio.
- Bonnie Tyler recorded her song Total Eclipse of the Heart in 1983, and in 2008 it set a record for the most popular karaoke track ever.
- Tourists in a well-known site were given permits to take photos, but they were not permitted to take in their cameras.
c)
- Project → N; projected → V
- decreased → V; decrease → N
- appealed → V; appeal → N
- recorded → V; record → N
- permits → N; permitted → V
d)
- Project; projected
- decreased; decrease
- appealed; appeal
- recorded; record
- permits; permitted
Appeal has the same syllable stress in the noun and verb form. The other have different stress.