Which of the following topics are too general? music
a shark's diet
Earth
characteristics of birds
Olympic gymnastics training - a day in the life
what to expect on an African safari

Earth and Music

Explanation: I believe this because there are many subjects within these topics. While all the other topics are fairly basic and don’t have many subjects within them.

there are the initial camera costs, with each camera running about $1,000, but the storage costs are where the real expense comes in. according to a recent time article online, nearly a third of the 18,000 state and local police departments in the u.s. are purchasing body-cameras for their officers.