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Truancy: intentional absence from school without permission.
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2:56
This Country Has Something Everyone Else Wants
To learn more about this topic, start your googling with these keywords:
Phosphorus - a chemical element used in explosives, matches, and fertilizers (as it is a key nutrient for plant growth)
Phosphate rock - a sedimentary rock containing high amounts of phosphate minerals - the main source of agricultural P fertilizer
Phosphate - a salt or ester of phosphoric acid, containing PO4 -3 or a related anion or a group
4 Rs of Nutrient Management - Right fertilizer source, at the Right rate, at the Right time, and in the Right place
Reserve - the part of a resource that could be economically extracted or produced at the moment
Resource - a concentration of naturally occurring solid, liquid, or gaseous material in or on the Earth’s crust in such form and amount that economic extraction of a commodity from the concentration is currently or potentially feasible
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3:59
The Secrets of Extreme Breath Holding
To learn more about this topic, start your googling with these keywords:
Static Apnea: Holding your breath without swimming or moving.
Apneist: Someone who competes in apnea-related contests.
Fight or Flight Response: A set of physiological responses to a perceived mortal threat.
Mammalian Dive Reflex: A set of physiological responses to immersion that overrides the basic homeostatic reflexes.
Diaphragm: A strip of skeletal muscles underneath the lungs that contracts and flattens when you inhale. It starts spasming as part of involuntary breathing movements when the body starts to run out of oxygen.
Spleen: An organ that primarily acts as a blood filter that can deflate to return blood to the circulatory system.
Carbon Dioxide Tension: The increase in CO2 pressure in the blood as oxygen levels fall.
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3:37
Panda Coloring
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1:12
Grolar Bears
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From the creators of the popular science show with millions of YouTube subscribers comes the MinuteEarth podcast. Every episode of the show dives deep into a science question you might not even know you had - but once you hear the answer, you’ll want to share it with everyone you know. Our team of scientists digs into the research and breaks it down into a short, entertaining explanation jam-packed with science facts and terrible puns. We’ll tell the incredible story of how monkeys crossed the Atlantic ocean on natural rafts, and we’ll explain why it gets hotter the deeper you dig underground.