Ecology · Ecology and Environment · UPSC Civil Service

Consider the following statements:Statement-I:The atmosphere is heated more by incoming solar radiation than by terrestrial radiation.Statement-II:Car...

Consider the following statements: Statement-I: Rainfall is one of the reasons for weathering of rocks. Statement-II: Rain water contains carbon dioxi...

One of the following regions has the world’s largest tropical peatland, which holds about three years worth of global carbon emissions from fossil fue...

Consider the following:1. Carabid beetles2. Centipedes3. Flies4. Termites5. WaspsParasitoid species are found in how many of the above kind of organis...

Consider the following statements:Statement-I:Many chewing gums found in the market are considered a source of environmental pollution.Statement-II:Ma...

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulfur dioxide emissions?

Which one of the following is the best example of repeated falls in sea level, giving rise to present-day extensive marshland? 

About three-fourths of world's cobalt, a metal required for the manufacture of batteries for electric motor vehicles, is produced by 

Consider the following statements :  Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate ...

Consider the following statements regarding mercury pollution: 1. Gold mining activity is a source of mercury pollution in the world. 2. Coal-based ...

With reference to green hydrogen, consider the following statements: 1. It can be used directly as a fuel for internal combustion. 2. It can be blen...

Consider the following statements: Statement-I: The soil in tropical rainforests is rich in nutrients. Statement-II: The high temperature and moistu...

With reference to coal-based thermal power plants in India, consider the following statements: 1. None of them uses seawater. 2. None of them is set...

'Wolbachia method' is sometimes talked about with reference to which one of the following?

Consider the following activities: 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding ...

Consider the following heavy industries: 1. Fertilizer plants 2. Oil refineries 3. Steel plants Green hydrogen is expected to play a significant r...

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?

"System of Rice Intensification" of cultivation, in which alternate wetting and drying of rice fields is practised, results in : 1. Reduced seed requ...

In the context of WHO Air Quality Guidelines, consider the following statements : 1. The 24-hour mean of PM2.5 should not exceed 15 μg/m³ and annual ...

Which of the following are nitrogen-fixing plants ? 1. Alfalfa 2. Amaranth 3. Chickpea 4. Clover 5. Purslane (Kulfa) 6. Spinach Select the corr...

"Biorock technology" is talked about in which one of the following situations ?

The "Miyawaki method" is well known for the :

Which one of the following best describes the term "greenwashing"?

Consider the following statements: 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high abs...

Consider the following: 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are c...

How is permaculture farming different from conventional chemical farming? 1. Permaculture farming discourages monocultural practices but in conventio...

With reference to ‘palm oil’, consider the following statements: 1. The palm oil tree is native to Southeast Asia. 2. Palm oil is a raw material for...

“Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is larg...

What is blue carbon?

With reference to furnace oil, consider the following statements: 1. It is a product of oil refineries. 2. Some industries use it to gener...

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment.  2. T...

'R2 Code of Practices’ constitutes a tool available for promoting the adoption of

Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Select the correct answer using the c...

In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?

Which one of the following is a filter feeder?

Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers ...