Draw a model to show how the metamorphic rock gneiss forms and then changes into sedimentary rock. Your model should include how and where the rocks form and the source of energy for each change. Be sure to label each part of your model and describe what it shows. PLEASE HELP! THIS IS OVERDUE

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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