FusionSh4dow FusionSh4dow

10-02-2017
Social Studies

Answered

Oxygen was initially created in earth's atmosphere by ____.
●Volcanoes outgassing
●cyanobacteria photosynthesizing
●greenhouse effect
●Ozone breaking down

Verified Answer :

kkwynn1999 kkwynn1999

10-02-2017

it would be cyanobacteria photosynthesizing because photosynthesis in plants is what makes and releases oxygen

Answer Link

kahknight kahknight

10-02-2017

Cyanobacteria is the source of oxygen.

Answer Link

Related Questions

A 16mile race is made up of 3 equal sections Which equation shows how to find the number of miles in each section

How does the birth of an Athenian male differ from the birth of a Spartan Male

7 Which sentence best shows correct comma usage Corn cotton fruit wheat beans coffee tomatoes and rice are grown in Mexico Corn cotton fruit wheat beans coffee

Which federal agency collaborates with the Computer Incident Advisory Capability CIAC FBI d OJ Secret Service d OE

A turkey for Thanksgiving is on sale The price has been reduces from 45 to 30 What is the percent decrease

When does president obama arrive in palm springs

what is world war 2 what is the answer

What do you do if you have two medians from the data

factor Completely 3x3 12x

What console can be used to enable disable start or stop a service

Web Analytics