Hey there!
Ninety nine percent of the atmosphere is composed of oxygen and nitrogen! The atmosphere is composed of 78% nitrogen and 21% oxygen!
Hope it helps :D
Hola aquí va la respuesta!
Se fomentó la inmigración europea porque la economía no era buena y vinieron a Paraguay para mejorar su situación.
Answer:
you need only one independent variable because if not, you wont know what factors have changed your experiment.
Explanation:
chlorine has the atomic mass of 35.5 and is a non metal in the halogen family
