Which type of white blood cells produces antibodies

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?