Flamingoes, corymorants or cranes will be harmed the most if the aquatic system is polluted by

1. $N{O}_x$

2. Fertilizers

3. DDT

4. Domestic sewage

 

Pick the correct set of gases labelled A, B, C and D in the given figure showing their respective contribution to global warming

1. $A-CFCs,<mspace\; width="1em"></mspace>B-C{H}_4,<mspace\; width="1em"></mspace>C-C{O}_2,<mspace\; width="1em"></mspace>D-N_{2}O$

2. $A-C{O}_2,<mspace\; width="1em"></mspace>B-C{H}_4,<mspace\; width="1em"></mspace>C-CFCs,<mspace\; width="1em"></mspace>D-N_{2}O$

3. $A-N_{2}O,<mspace\; width="1em"></mspace>B-C{H}_4,<mspace\; width="1em"></mspace>C-C{O}_2,<mspace\; width="1em"></mspace>D-CFCs$

4. $A-C{O}_2,<mspace\; width="1em"></mspace>B-CFCs,<mspace\; width="1em"></mspace>C-C{H}_4,<mspace\; width="1em"></mspace>D-N_{2}O$

'Ozone depletion' means thinning of ozone layer during spring season and 

1. This will allow UV-A to enter stratosphere which will cause snow blindness 

2. This is caused by ${\mathrm{N}}_2\mathrm{O}$ as major pollutant

3. Ozone is released during this as ${\mathrm{O}}_2$ or ClO

4. First large hole was discovered over north pole

If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face the problem of:

Which of the following statements about ozone is correct?

1. Tropospheric ozone protects us from UV radiation

2. Stratospheric ozone is 'bad'

3. Tropospheric ozone is 'good'

4. Stratospheric ozone protects us from UV radiation

Cleaning of wastewater in Arcata Marsh involves

1.  Only conventional method of sewage treatment

2.  Removal of dissolved heavy metals through a biological process

3.  Filteration, chlorination like chemical processes

4.  Utilisation of microorganisms only for pollution control 

Eco-san toilets are not associated with which of the following?

1.  Are working in Sri Lanka and Kerala

2.  Composting method for recycling of human excreta

3.  Recycled material forms natural fertilizer

4.  Enhance the need for chemical fertilizers 

Amrita Devi Bishnoi Award is given to individuals or communities from rural areas that have shown extraordinary courage and dedication in

1.  Protecting wildlife

2.  Minimizing the ODS

3.  Organic farming

4.  Biotechnology 

During the past century, the temperature of Earth has increased by _____, most of its during the last three decades
1. 6°C
2. 0.6°C
3. 0.8°C
4. 7°C

How much percent forest cover was recommended for hills by National forest policy (1988) ?

1. 33

2. 67

3. 40

4. 30