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

What is the name of the period that has the digits 913,256.

A star at the end of its life-cycle, composed of mostly carbon, is a A. nova. B. giant. C. red dwarf. D. white dwarf.

A camera is an example of ____. a. an experiment c. technology b. a robot d. a scientific method

The proteins in the cell membrane allow substances to come or go, based on their concentrations. This is an important part of _________________, which maintains

A solution that contains equal numbers of hydrogen and hydroxyl ions would be called acidic basic alkaline neutral

NEED HELP ASAP 1.Which word in the sentence should be capitalized? next year Sara would like a part-time job. A. Job B. Like C. Next D. Year 2

Which of the following climates is most suited for physical weathering? A. Hot B. Cool C. Warm D. Dry

A cube is measure 1 cm on each side and has a mass of 2 grams. Will it float on water?

Which Indian piece of literature contains the passages called the Bhagavad Gita? a. the Mahabharata c. the Ramayana b. the Siddheswara d. the Panchatantra

Wind direction is determined by the Earth’s rotation. true or false?