By breathing nitrogen from the atmosphere (it makes about 70ish percent of our atmosphere)
Answer:I can answer one airplanes fly by creating airflow over there wings and that creates lift
Explanation:
The main and the most promising difference between active and passive transport is, passive transport does not require energy while active energy does.
Answer:
Q2->They all form acids when combined with hydrogen. They are all fairly toxic. They readily combine with metals to form salts.
Q3->Because their outermost orbit is complete. In Mendeleev's original periodic table there was no place reserved for noble gas. They were discovered in end of 19th century. So Mendeleev created zero group without disturbing original periodic table.
Explanation:
