Consider the following statements.

1.  The energy required for the life within th biosphere comes only from the sun.
2. Ecotone is larger than a biome.
3. A well-developed ecotone may contain some unique organisms which might be absent in the adjacent ecosystems.

Which of the above statements is/are correct?

Which of the following activities releases carbon dioxide into the atmosphere?

1. Respiratory activities of the producers and consumers.
2. Processing of waste materials by Decomposers.
3. Forest Fire
4. Combustion of organic matter
5. Volcanic activity

Select the correct answer code:

Consider the following statements.

1. In the composition of living organisms, carbon constitutes the maximum share in the dry weight of organisms.
2. In the total quantity of global carbon, maximum percentage of carbon is found dissolved in oceans.

Which of the above statements is/are incorrect?

Which among the following is the main constituents of Biogas?

Consider the following statements regarding “The Climate and Clean Air Coalition”

1.  It is a voluntary partnership of governments and intergovernmental organizations, businesses, scientific institutions and civil society organizations.
2. India is a state partner of this coalition.
3. Coalition’s initial focus is on pollutants like methane, black carbon and HFCs.

Which of the above statements is/are correct?