Explanation : National Curriculum Framework-2000 has made environmental Education for the students of class 3rd to 5th. This
has been done to educate the young students about environmental concern at an early age.
Explanation : In India, Himalayas region records the maximum landslides whenever heavy rain hit the area. The roads and villages gets affected when land slides occur leaving many people homeless and dead.
Explanation : Contour farming is not related to soil erosion. It is the form of farming which is related to hilly areas. This is not in matching with soil erosion.
Explanation : 673 kcal of energy is released by any living organisms which conducts aerobic respiration. It is highly critical and always takes place in the presence of oxygen.
Explanation : Flooding kills mesophytic plants because the root respiration ceases. It is the airy space that allows roots to gain strength and therefore, it absorbs nutrients from the soil.