Carlo8552 Carlo8552

12-01-2018
Geography

contestada

Which gas was not a part of earth's atmosphere 3.6 billion years ago?

Respuesta :

severnandmom severnandmom

17-01-2018

Oxygen. Oxygen was a gas that was not part of earths atmosphere for a while. Hope I helped! :D

Answer Link

Otras preguntas

To a nighttime observer on Earth, how many degrees do the stars appear to move around Polaris in 3 hours?

During World War II, the Manhattan Project was the name of the plan to (1) open a second front in Europe (2) capture Pacific islands held by the Japan

What was a major effect of the creation of the interstate highway system on the United States? (1) the loss of population in the Sun Belt (2) a declin

what activity will create tension in the legs? A. stretching your legs before a run B. standing for five minutes C. pressing a car's accelerator pedal D. squa

To a nighttime observer on Earth, how many degrees do the stars appear to move around Polaris in 3 hours?

Which constitutional power was most directly responsible for the action taken in this letter? (1) power of Congress to override vetoes (2) power of th

Which of the following is NOT a characteristic of living things? a.one or more cells b.complex chemical activity c.reproduction d.nuclear reactions

What is the greatest number of acute angles that a triangle can contain?

Characteristics of metals?

How many miles/hour is 30 km/s?