. If fossil X had an original mass of 600 grams of Carbon-14, and now only has 9.375 grams of Carbon-14, how old is this fossil? (Enter your answer as only a number with comma(s) where needed- do not add years old, yr. old, etc... only the number)

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

What drives an advertising campaign?

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl