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

describe how using active listening at work can help you be a better employee.

Our Sun is all of the following EXCEPT ____. a. part of a binary system c. a yellow star b. a main sequence star d. of average absolute magnitude

How many times does 4 go into200

In which one of the following sentences is the apostrophe used correctly? A. The train began it's journey across country. B. I put the letter back into it's fi

Looking up words in a dictionary will improve reading ________ and vocabulary.

Comparing fractions 2/5 or 2/3

which of the following components of the skin is innermost, or farthest from the surface of the skin? A. Sebaceous glands B. Hair follicles C. Hypodermis D..

An interview is a(n) __________ in which one-on-one or small group question-and-answer sessions are conducted. secondary source unreliable source serious source

4.8 times what equals 1.2

Which one of the following temperatures is equal to 5°C? A. 465 K B. 0 K C. 41 K D. 278 K