Select the correct statement(s): 10 O3 CO2 A. Water is one of the biomarkers tha

Question

Select the correct statement(s):

10 O3 CO2 A. Water is one of the biomarkers that has the strongest absorption in the B. The detection of both methane and oxygen out of chemical equilibrium C. The red edge in the spectrum is due to strong reflection of near D. Ozone is not considered to be a biomarker as it produced naturally by visible part of the spectrum. would be a strong indication of biogenic activity infrared light by plants photochemistry. CH4 N2O 10-8 H20 02 H20 -9 10 H2O H2O CO2 E.Carbon dioxide is a good biomarker as it is produced by respiration in 10-10 living organisms 0.5 1 5 10 20 Wavelength (um) F. Absorption bands due to water in the planetary spectrum cannot be used as a proof that liquid water is present on the nlanetary surface

Explanation / Answer

Water doesn't absorb in the wavelength range of visible light.

Oxygen is currently the most reliable biomarker due to its production by photosynthetic vegetation.High concentrations of methane indicate the presence of methanogenic bacteria or the decomposition of organic matter. So , detection of both is a strong idication of biogeic activity.

Due to photosynthetic pigments in plants, most of the visible electromagnetic spectrum is absorbed, especially in the blue and red region.Strong reflection is observed in near infrared.

Ozone is a photolytic product of oxygen, which means that ozone is created through the chemical decomposition of oxygen by light. It is considered as biomaker.

Atmospheric biomarkers include oxygen, ozone, nitrous oxide, and methane. CO2 is not a biomaker.

.Water is also not a true biomarker but it is kept in group of biomaker due to its spectrul properties.

So, Correct option is (B) Only

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.