Livcannon Livcannon

01-02-2017
Biology

contestada

Cyanobacteria which first appeared on earth over 3 billion years ago are

Respuesta :

kev2002 kev2002

02-02-2017

Cyanobacteria also known as one of the first organism on earth are responsible for producing nearly 80% of the oxygen on earth.

Answer Link

Otras preguntas

Which best summarizes the findings of Hershey and Chase?

1.Which of the following did the development of linear perspective allow artists to do? A. show human anatomy more accurately B. paint three-dimensional image

6x5-3x3x3 divide by 3

Convert 6.7 hours to hours and minutes. A) 6 hours and 30 minutes B) 6 hours and 36 minutes C) 6 hours and 42 minutes D) 6 hours and 48 minutes E) 6 hours

Which region of Oklahoma is known for having hills that with thick forests cultivating soybeans having a good oil supply and beingthe home of tallgrass Prairie

The expression 20L + 25G – 10 calculates the number of dollars that the ABC Lawn Company makes from mowing L lawns and raking G gardens. How many dollars does

Use your knowledge of the art historians evaluation process to Analyze the bus by Frida Kahlo.who,where when in a paragraph 4-5 complete sentences

Living organisms are abiotic where as the non living factors are called biotic factors TRUE OR FALSE

please help me with this question

A. How do the Earth’s physical factors influence population density? When population growth increases in an area, what is happening to the birth rate and age st