By knocking at the bend of the knee with a small "hammer". If the leg "spasms" then the superficial reflex is in working condition. Hope this helps :)
It is the ozone layer, good luck! :)
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"Aerial roots preserve water in the orchid. Aerial roots allow the orchid to attach itself to trees."
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You could thank them for all their hard work and talk about one thing this year that you enjoyed doing with them or something i guess
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