bbrooke453 bbrooke453

21-05-2014
Biology

contestada

Why do you think scientists think the first organisms did not need oxygen to survive?

Respuesta :

mstv1112 mstv1112

21-05-2014

Nitrogen and Hydrogen were more prevalent in Earth's early stages of "life" and a lot of organisms live under water.

Answer Link

Otras preguntas

Exponential Growth & Decay - Guided Practice #2 - Find the balance in the account after the given period. $500 principal earning 4% compounded quarterly, af

Help with these 2 questions.Asapcan anyone help??

Do we still need an American System in 2022? Why or why not?

3x^2 y^3 x 4^3 y simplyfy the number but I don't know which

Simplify 3(x - 6) - 4(x + 3).A)-x - 30B)-x - 9C)-x - 6D)-x2 - 30

please help :D i'll give branlest ^^ This sentence contains information that is _______. Stephanie stayed in her room all day after the events of the morning. e

Which source is an example of a primary source? A. A newspaper article about a study that examined how certain diets affect people's health B. A report about ho

What newspapers were critical of the Gettysburg Address and why?

Acceleration refers to any changes in

TRUE or FALSE: Observational studies are used to determine causality between explanatory and response variables.