knita703 knita703

06-12-2020
Biology

contestada

why free oxygen was not found in primitive atmosphere?

Respuesta :

nvogelgesang26 nvogelgesang26

06-12-2020

Answer:There was no oxygen in the early air until basic life forms developed the ability to complete photosynthesis. During this cycle, daylight and carbon dioxide are utilized to make energy, delivering oxygen as a result.

Explanation:

Answer Link

Otras preguntas

The narrator of "The Scarlet Ibis" is ? A. a young boy with a disability. B. a young girl with a disabled brother. C. a parent of a disabled child. D. an adult

In your own words what is the role of lactose in emb agar

The temperature dropped from 75 degrees to 50 degrees. What was the percent decrease in the temperature?

Q: A: Carla watched a beetle and a spider on the sidewalk. The beetle crawled 3 4 of a yard and the spider crawled 1 3 of a yard. How much farther did the

The balanced equation below shows the products that are formed when pentane (C5H12) is combusted. C5H12 + 8O2 mc029-1.jpg 10CO2 + 6H2O What is the mole ratio of

in need of help please

@zealandcui this is the pic I meant to post

how do you find “c”? And how do you set up the equation?

Describe two activities of moderate or vigorous intensity level that you participate in, with each activity focusing on different components of health-related f

Who wrote the first modern chemical textbook

good job