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1. What are the different forms of energy displayed in the Gizmo?
2. Less than 20% of the energy we use comes from renewable sources (such as nuclear power). If renewable energy does not run
out, why is it not used anymore?

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time