Birds migrate every year and return back to the same spot
Plant tissues are categorized broadly into three tissue systems: the epidermis, the ground tissue, and the vascular tissue. Epidermis - Cells forming the outer surface of the leaves and of the young plant body. Vascular tissue - The primary components of vascular tissue are the xylem and phloem.
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I'm assuming the question is asking why heat causes ice to melt. If so, it is because when heat is involved, the water molecules move faster, breaking the hydrogen bonds holding them all together, no longer holding the crystal lattice structure that is ice.
Answer:
S phase is the correct answer. Hope this helps...
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