Explanation:
Carbon dioxide and other greenhouse gases in the atmosphere prevents long wave radiation from leaving the earth and in the process, it raises global temperatures.
- Greenhouse gases helps to maintain the fair balance in temperature on the earth surface.
- They keep the temperature of the earth in balance by preventing it from losing all of the heat it gains.
- Radiation from the sun reaches the surface as short wave radiations.
- When they get absorbed and re-emitted, they produce long wave thermal radiations.
- In the atmosphere, the radiations are cut off and causes warming due to their interaction with greenhouse gasses there
- When the amount of these gases in the atmosphere become more than normal, more heat becomes trapped.
- This leads to an anomalously high surface temperature on earth.
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Scientists estimate that 150-200 species<span> of plant, insect, bird and mammal </span>become extinct<span> every 24 hours.</span>
The molecule which is the final electron acceptor for electrons from photosystem I is (d) NADP⁺.
Photosystem I is the protein complex involved in the process of photosynthesis. It captures the light energy to mediate the transfer of electrons from a series of electron transporters. It is involved in non-cyclic as well as cyclic photophosphorylation.
NADP⁺ is the Nicotinamide Adenine Dinucleotide Phosphate. It acts as a coenzyme. It is an important constituent in various anabolic reactions like Calvin cycle, lipid and nucleic acid syntheses, etc. The oxidized form of NADP⁺ is NADPH. It is present in organisms of almost all kinds.
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The Geologic time scale makes it easier to see the age of rock layers
