PLEASE HELP I HAVE NO IDEA WHAT I AM DOING AN CHEM IS SO HARD FOR ME!

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

What is the main reason why some developing countries fear the increase the free trade policies around the world?

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.