An engineer is building an electronic device. she wants to use a material that will give her the most control over the amount of electric charge that flows through a circuit. which material should she use?
a tube
a insulator
a semiconductor
a conductor

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

mark as brainlest

gokuson