Question 1

Which of the following is not a major greenhouse gas?

Accepted Answer

Calcium carbonate is not a greenhouse gas. Major greenhouse gases include carbon dioxide, methane, nitrous oxide, water vapour, chlorofluorocarbons, hydrochlorofluorocarbons among others.

Question 2

Write harmful effects of plastics.

Accepted Answer

The harmful effects of plastic bag are1)Kills Animals2)Litters the landscape3)Non-Biodegradable4)Plastic bags block drains5)Plastic releases toxic when burned6)Plastic pollutes soil7)Plastic pollutes ocean8)Petroleum is required to produce plastic bags.9)Littering the Environment10)Hazard to Children.Hope my answer is helpful to you and pls mark me as brainliest

Question 3

Biodiversity refers to the number and variety of organisms found within a particular habitat. Which of the following is one of the measures of biodiversity?

Accepted Answer

Biodiversity is a term that is used to refer to the crowd of living organisms that occupy the variety of habitats on the earth and have adapted to suit their lives according to the environment they inhabit. The biodiversity can be studied at the following three levels: GENETIC BIODIVERSITY: This refers to the genetic variation within the same species, for example, the colour of fur in cats. SPECIES BIODIVERSITY: This refers to the variety of species occupying a particular area. A species can be defined as the group of organisms that are capable of interbreeding.ECOSYSTEM BIODIVERSITY: This refers to the biodiversity present in the different ecosystem, for example, tropics have a higher degree of biological diversity as compared to temperate or polar regions.

Question 4

Suggest four measures to check water pollution.

Accepted Answer

Following are the four ways to prevent water pollution:1.Chemical industries which pollutes the water most should be set up away from rivers and water reservoirs.2.Waste water of industries should not be directly disposed off in the rivers.3.Water of industries should not only be purified but also used for irrigation.4. People should not bathe in rivers and should not wash their clothes in rivers.

Question 5

The ways to implement the zero garbage system at domestic level.

Accepted Answer

The Zero Waste model stresses on reusing the resources so that as to decrease the wastage and decrease pollution to protect the environment. At domestic level, many steps can be taken to implement the Zero Waste method.1. Reuse glass bottles instead of disposing them. 2. Using vegetable and fruit peels as manure for plants. 3. Using reusable glass bottles for delivering milk instead of plastic packets or cartons. 4. Solar energy used for lighting and for heating purposes using sunlight.5. Mineral wastes be used as landfills which decompose into manure.

Question 6

How are moist deciduous forests different from dry deciduous forests?

Accepted Answer

Difference between moist deciduous forests different from dry deciduous forests:Moist Deciduous ForestsDry Deciduous Forests(i) Found in areas receiving rainfall between $200$ and $100$cm.(i) Found in areas having rainfall between $100$cm and $70$cm.(ii) These forests exist, therefore, mostly in the eastern part of the country-northeastern states, along the foothills of the Himalayas, Jharkhand, West Orissa and Chhattisgarh, and on the eastern slopes of the Weestern Ghats.(ii) These forests are found in the rainier parts of the peninsular plateau and the plains of Bihar and Uttar Pradesh.(iii) Teak is the most important species of this forest. Bamboo, sal, shisham, khair, kusum are other commercial species.(iii) Important trees found in these forests are teak, sal, peepal, neem.

Question 7

State any four objectives of disaster management.

Accepted Answer

The four objectives of disaster management are;1. Encouraging culture of disaster preparedness.2. Institutionalisation of disaster management.3. Safety and quick decision making.4. Post disaster medical help and first aid.

Question 8

Which of the following is not one of the major environmental problems resulting from human interference in the nitrogen cycle?

Accepted Answer

Eutrophication is characterised by a significant increase of algae due to the greater availability of one or more growth factors necessary for photosynthesis, such as sunlight, carbon dioxide and nutrients like Nitrogen.Nitrous oxides, being a greenhouse gas traps heat and light from the sun in the earth's atmosphere, which increases the temperature leading to global warming.In the presence of rain, nitrogen oxides form nitric acid, contributing to the acid rain along with sulphuric acid.Aside from sunlight (solar radiation), the main ingredients for ground-level ozone formation are volatile organic compounds (VOCs) and nitrogen oxides (NOx).So, the correct option is 'Stratospheric ozone depletion'.

Question 9

The increase in Earths average surface temperature due to the effect of greenhouse gases such as $CO_{2}$ and emissions from fossil fuel is known as global warming. What could be the effect of global warming?

Accepted Answer

The melting of the polar ice caps is caused by the overall increase in global temperature, and this melting can have serious consequences for all organisms on Earth. Besides being important for marine life, ice caps help regulate sea level and global temperatures.Not only does the melting of the ice caps increase the volume of water in the oceans, it also decreases the salinity, or salt content. Polar ice caps are made of fresh water, so adding more fresh water without adding more salt makes the ocean water less saline. This can cause problems for organisms that are well adapted to the very salty ocean waters.

Question 10

Which one of the following is not a part of India's National Action Plan on Climate Change (NAPCC)?

Accepted Answer

India's National Action Plan on Climate Change consists of the following programmes:National Solar MissionNational Mission on Enhanced Energy EfficiencyNational Mission on Sustainable HabitatNational Water MissionNational Mission for Sustaining the Himalayan EcosystemNational Mission for a 'Green India'National Mission for Sustainable AgricultureNational Mission on Strategic Knowledge for Climate Change