codoi84 codoi84

16-01-2018
Biology

contestada

what process created the oxygen in the atmosphere of the early earth

Respuesta :

nicholeashleyy nicholeashleyy

16-01-2018

The answer is tiny organisms known as cyanobacteria, or blue-green algae

Answer Link

Otras preguntas

Which climate type is associated with savannas? A)subarctic B)humid subtropical C)tropical wet and dry C)wet tropical

Solve this equation for x x-2y=8

Choose the polynomial that is written in standard form. A. xy3 + 4x5y + 10x3 B. x4y2 + 4x2y + 8x C. −9x4y2 + 4x3y5 + 10x2 D. x6y3 + 4x4y8 + x2

Higher rates of interest tend to _____ the quantity of loanable funds demanded, and lower rates of interest tend to _____ it

What are the answers for both drop downs the first one is asking for 3.113 and the second is asking for 1.2795

A negative charge in a cloud induces a positive charge in the ground below the cloud. The charges gradually increase. Then the air itself becomes charged and fo

URGENT QUESTION!! Which process provides the energy used to make ATP from ADP? phosphorylation of ADP the assembly of energy-rich sugars the breakdown of

Lyndon Johnson signed the civil rights act of 1964. Which groups where affected by this piece of legislation?

WILL GIVE A BRAINLEST Zooplankton get their energy from _____. small fish phytoplankton grasses photosynthesis

50 POINTS NEED HELP!!!!!! Which of the following statements are TRUE about the pathway of cellular respiration? Question 1 options: choose all that apply Proce