I can’t see any example but for materials metal heats faster than materials like wood and rubber because metal is a conducted so it transfers heat quickly compared to wood and rubber which are both insulators
DNA is found in the nucleus
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The cambial ring becomes active and starts cutting off new cells; both on the inner and the outer sides. The cells which are cut off towards the pith mature into secondary xylem. The cells which are cut off towards the periphery mature into secondary phloem.
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B. An ecosystem in which plant roots are submerged during parts of the years