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earth science multiple choice

1. Chemicals released into the air from human activity, such as sulfur dioxide, carbon dioxide, and nitrous oxide, interact with the atmosphere to make acid rain. In which atmospheric layer does this process happen?
a. mesosphere
b. ionosphere
c. thermosphere
d. troposphere

2. Earth's second atmosphere (atmosphere ll) was a thick atmosphere of primarily water vapor and carbon dioxide. What effects did this have on earth?
a. Heat energy was retained and water vapor condensed.
b. Ultraviolet light split water vapor into hydrogen and oxygen.
c. Helium and hydrogen gases escaped earth's gravity.
d. Increased oxygen allowed reptiles to thrive.

3. Which layer of the atmosphere contains a substance that was created from a product of living things and that protects living things?
a. ionopause
b. ozone
c. exosphere
d. stratosphere

4. Which process in living things evolved as oxygen levels increased in earth's atmosphere?
a. photosynthesis
b. glycolysis
c. aerobic respiration
d. fermentation

5. Earth's second atmosphere (atmosphere ll) was produced primarily by which process?
a. plant life
b. outgassing
c. photosynthesis
d. condensation

Respuesta :

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below are the answers:

1. troposphere - The acidity of rainwater comes from the natural presence of three substances (CO2, NO, and SO2) found in the troposphere (the lowest layer of the atmosphere).
2. a. Heat energy was retained and water vapor condensed. 
3. stratosphere -  it is an atmospheric layer, and "ozone" is not a formal atmospheric layer. (If "ozone layer" was a choice it might be valid / defendable too.)
4. glycolysis - The process by which living things evolved as oxygen levels increased in earth's atmosphere would be aerobic respiration. This process involves the consumption of oxygen. Hope this answers the question.
5. photosynthesis 

1 is D. Sorry this is the only question I could answer.

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