UPSC Prelims 2021 Environment & Ecology

Bisphenol A (BPA) , a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

Consider the following animals: 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by predators, which of the above organisms rolls up/...

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

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?

With reference to the ‘New York Declaration on Forests’. Which of the following statements are correct? 1. It was first endorsed at the United Nations Climat...

Which one of the following is a filter feeder?

The ‘Common Carbon Metric’, supported by UNEP, has been developed for

Among the following, which one is the least water-efficient crop?

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

In the context of India’s preparation for Climate-smart Agriculture, consider the following statements: 1. The ‘Climate-Smart Village’ approach in India is a...

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

What is blue carbon?