Scientists often take a sample of a population or object to use in an experiment. This sample is intended to represent the whole population or object from which it is taken. In general,

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?