BLOODGANGx1608 BLOODGANGx1608
  • 21-11-2017
  • Biology
contestada

The large amount of free oxygen in earth's present atmosphere is primarily a result of

Respuesta :

linahfajardo
linahfajardo linahfajardo
  • 21-11-2017
a biological process such as photosynthesis. 13. Billions of years ago, Earth's atmosphere was composed primarily of carbon dioxide
Answer Link

Otras preguntas

Which one? Pick two numbers that multiply together to equal 1 million 200 2000 5000 50000
The gross income of Maurice Vaughn is $785 per week.His deductions are $42.25,FICA tax,$90.33,income tax,2% state tax,1% city tax and 3% retirement fund.what is
Jenna earns $9.75 per hour working at the mall. If Jenna worked hours last week, how much did she earn before taxes were taken out?
During an​ accident, when the​ vehicle's airbag​ deploys, it can cause injuries to​ the
1, should the phlebotomist draw from the vein on the underside of the wrist? why or why not?
Why is it important that an exact copy of the original dna is made before cell division?
can someone help me asap! thank you so much
Until about __________ years ago, humans acquired virtually all of their food through foraging.
The response of an organism to the duration of light it receives in a day is called:
What was William McKinley’s view on imperialism