Many of the first photographers were actually scientists and inventors. a. true b. false

Option (A)- True

Explanation:

Earlier scientists and inventors did a lot of research by conducting various experiments and constructed new instruments and objects, that were helpful for their discovery. These inventions includes telescope, camera, telephone, light bulbs and many more. These inventions have made human's life very easy.

The camera was one of the major invention, innovated in 1685 by Johann Zahn and the very first photograph was clicked in 1814 by Joseph Nicephore Niepce, who was mostly an inventor, artist and a scientist.

So the above given statement is true.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

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