You don't know what parts of the ground are safe and what parts are thin crusts of soil covering fires or sinkholes. Design a system that can access the area and take measurements that show changes in the fires.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

the answer is symmetrical : )