lkanan98p0eg20 lkanan98p0eg20
  • 03-12-2017
  • Biology
contestada

What makes up 21 percent of the earths atmosphere

Respuesta :

bossloveswag bossloveswag
  • 03-12-2017
  the answer is 21% oxygen, 
Answer Link
calliebmee1
calliebmee1 calliebmee1
  • 03-12-2017
21% oxygen.................................
Answer Link

Otras preguntas

In terms of entropy and energy, systems in nature tend to undergo changes toward (1 ) lower entropy and lower energy (2) lower entropy and higher energy (3) hig
During the Cold War, what was the main concern of the United States?
What is freedom of religion?
What ocean is on the West Coast of the United States?
Which compounds are classified as Arrhenius acids? (1) HCl and NaOH (2) HNO3 and NaCl (3) NH3 and H2CO3 (4) HBr and H2SO4
Given the balanced equation representing reaction: N2 + energy ==> N + N Which statement describes this reaction? ( I) Bonds are broken, and the reaction is
what is the cause to air pollution??? please help me!!!!
Under our Constitution, some powers belong to the states. What is one power of the states?
what does monarchy mean and how can you put it into a sentence
What is the political party of the President now?