Consider the following statements.

1. The energy pyramid of an ecosystem is always upright and narrows to the top.
2. The biomass in the upper trophic levels is generally very high as compared to the lower trophic levels.

Which of the above statements is/are correct?

Consider the following statements regarding Mediterranean Forests.

1. Mediterranean Forests are found in only those countries bordering Mediterranean sea.
2. They have thick barks and wax coated leaves which help them reduce transpiration.
3. Mediterranean Forests are known as ‘Orchards of the world’ for their fruit cultivation.

Which of the above statements is/are correct?

Oil spills can be treated with bioremediation by using some species of

1. Plants
2. Bacteria
3. Algae
4. Fungi

Select the correct answer using the codes below.

The higher the amount of biological oxygen demand (BOD) in a certain segment of water

1. The greater the amount of organic matter available for oxygen consuming bacteria.
2. Higher could be the level of pollution in the water

Select the correct answer code:

Consider the following statements regarding ocean acidification.

1. It largely occurs due to the high absorption of nitrogenous based acidic compounds.
2. Introduction of sea grasses can reduce the impact of acidification.

Which of the above statements is/are correct?