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Providing immunity by injecting the body with a weakened form a pathogen is known as

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

What will happen if deforestation continue to destroy the green plant on the planet