What is the purpose of the words in bold throughout the passage

What is a predic. how did the great railroad strike of 1877 demonstrate the power of workers? ate noun?

You need to start an experiment and the instructions are to mix 2 g of sodium bicarbonate with 50 ml of distilled water and then mix the solution. describe what lab apparatus you would use and what safety precautions you must observe when completing this experiment.

Yosemite has spectacular scenery and which has half-time bears. how do i write i. parallel structure?