Answer:
reduce exposure to foreign substances. humidify and warm inhaled air. increase air flow to arteries, veins
An isotope of any element is the same, with a variation in the neutrons of the nucleus.
The mass number change but the atomic number doesn't.
In this case, protium, deuterium, and tritium are all hydrogen isotopes.
Protium is 1H or Hydrogen-1 is without neutrons.
Deuterium is 2H or Hydrogen-2 has one neutron.
Tritium is 3H or Hydrogen-3 has two neutrons.
Hey the answer to your question is that <em>Devegetation increases nutrient export
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Physical is something you can have/ hold and mental is something in ur head that you can't see or hold.
<span>a substance required in relatively larger amounts by living organisms</span>
