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Citrus2011 [14]
3 years ago
11

Describe the organism that scientists believe was responsible for changing the composition of the early atmosphere. What is it c

alled and how did it change the atmosphere? Why was this change to the atmosphere so important?
Chemistry
2 answers:
Yakvenalex [24]3 years ago
6 0

The early atmosphere was most likely principally CO2, with very little or no chemical element. The proportion of chemical element went up attributable to chemical change. The chemical change was conducted from little organisms.

lara31 [8.8K]3 years ago
4 0
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. <span>The proportion of oxygen went up because of </span>photosynthesis. The photosynthesis was conducted from <span>tiny organisms.
</span><span>cyanobacteria, or blue-green algae. </span><span>
They </span>used sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. This change to the atmosphere was very important because the <span>breathable air we enjoy today was created.</span>
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Describe the reason why a reaction between two substances comes to an end.
Shtirlitz [24]

Answer: The process by which a particular substance or different substances are transformed to another is called as Chemical Reaction.One reason, in the case of reversible reactions could be that the reaction reached equilibrium before the reaction was complete.Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.The concentration of reactants decreases as the reaction proceeds and at last their concentration comes to an end. Hence, the reaction stops too. If two reactants are being reacted, then the reactant which is in limited amount will consume first and will result in the termination of reaction.The usual reason is that one (or more) of the reactants gets used up.

Hope that was helpful.Thank you!!!

8 0
3 years ago
Los enlaces covalentes se presentan tanto en sólidos moleculares como en los que forman una red covalente ¿porque estas clases d
Viefleur [7K]

Answer:can u anser my question

Explanation: On page 17, author Joey Bartolomeo writes “Caleb participated in the investigation by testifying about what happened during the health seminar at his school.” As it is used in that sentence, what does "testify" mean? *

0 points

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3 0
2 years ago
Igneous rock___to form magma a)melts b)weathers c)compacts d)crystallizes NEED HELP ASAP
dangina [55]

Answer:

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5 0
3 years ago
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If there is a loss of 5.63 x 10-7kg of mass in a nuclear reaction, how many Joules of energy would be released? Recall that c =
Fudgin [204]
Thank you for posting your question here at brainly. 

E = mc^2 
<span>where E is the energy in joules, </span>
<span>m is the mass in kilograms, </span>
<span>and c is the speed of light. </span>

<span>E = mc^2 </span>
<span>E = (5.63 x 10^-7 kg)(3 x 10^8 m/s)^2 </span>
<span>E = 5.07 x 10^10 J </span>


5 0
3 years ago
Help ASAP need help and thank you:)
Akimi4 [234]

Answer:

50 N

Explanation:

Because It not in motion means it standing still. So the answer is 50 Newton

4 0
2 years ago
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