3. Which type of rock is formed 20 kilometers below Earth's surface? (1 sedimentary 2. metamorphic 3. igneous 4.magma please help me.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum

Which number should be placed before f2 on the reactants side equation to make equation balanced? xe + > xef4