This is for ‘what is a vaccine ?’

Create an explanatory essay outlining a technological advancement during the industrial revolution in england, and how this advancement impacted the workers. compare this information with information you have researched about a twenty-first century hardware invention, how this has changed lives, and how the workers who create the hardware are impacted. construct a strong conclusion, making a connection between technology of the past and present.

Identity the three types of language

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.