1852. Green plants are absent in deep sea. Why?

A. Light is absent
B. High pressure
C. Low temperature
D. Great depth
✅ The correct answer is option A.
Green plants are not found beyond a certain depth in the ocean because light can not penetrate deep into the ocean so, no producers are found in that zone as in the absence of sunlight green plants will not be able to produce food by photosynthesis.

1856. The legally binding international agreement to reduce Greenhouse gases by 5% 2012 is _________

A. Vienna convention
B. Montreal Protocol
C. Kyoto Protocol
D. Ozone Protocol
✅ The correct answer is option C.
The Kyoto Protocol implemented the objective of the UNFCCC to reduce the onset of global warming by reducing greenhouse gas concentrations in the atmosphere to “a level that would prevent dangerous anthropogenic interference with the climate system”.

1859. One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as

A. N2O and CO2
B. CFCs and N2O
C. Methane and CO2
D. Methane and CFCs
✅ The correct answer is option B.
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as CFCs and N2O.