A. A crisis based on the changing price of oil and load shedding
B. The search for acceptable and practical alternative source of energy
C. The environmental effects of a continuing dependence on fossil fuels
D. All of the above
Related Mcqs:
- The major factors that make today’s ‘land-use crisis’ a global issue of greatest concern is:
A. The magnitude of the problem on terms of people and areas affected, which is unprecedented in history
B. The accelerating nature of the processes involved and the increasing irreversibility of their results
C. The lack of success (for socio-economic, cultural or ecological reasons) of most agriculture technologies from temperate regions to solve land-productivity problems over large areas of the topics
D. All of the above - Energy flow and energy transformations in living systems strictly conform to the:
A. Law of limiting factors
B. Liebig’s law of minimum
C. Laws of thermo dynamics
D. Shelford’s law of tolerance
E. Biogenetic law - The ration of food energy assimilated to the food energy ingested is called:
A. Trophic level efficiency
B. Photosynthetic efficiency
C. Net production efficiency
D. Assimilation efficiency - The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is:
A. 25%
B. 50%
C. 10%
D. 5% - The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem’s:
A. Net primary productivity
B. Gross secondary productivity
C. Net secondary productivity
D. Gross primary productivity - The flow of materials and energy in an ecosystem is respectively:
A. Cyclic only
B. Cyclic and linear
C. Linear and cyclic
D. Linear only - Energy transfer from one trophic level to other in a food chain is:
A. 1%
B. 2%
C. 10%
D. 20% - Energy enters into the ecosystem through:
A. Herbivores
B. Carnivores
C. Producers
D. Decomposers - The rate of storage of food energy at consumer level is called:
A. Secondary productivity
B. Primary productivity
C. Gross productivity
D. Net productivity - Hydroelectric power is the electric power generated by the energy of:
A. Flowing water
B. River water
C. Dam water
D. Falling water
The correct answer to the question: "Energy crisis is:" is "All of the above".
