4. Markeith found several fossils and decided to use Carbon-14, which has a half-life of 5,730 years, to measure the age. How old is
each rock? Please help
b. A fossil that has 6.25 % of its carbon atoms still
unstable?
C. A fossil that has 75% of its atoms STABLE?

What is the polyatamic ion of thiosulfate

The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.