Advertisements
Advertisements
प्रश्न
What could have triggered mass extinctions of species in the past?
Advertisements
उत्तर
- Volcanic eruption
- Earthquake
- Extremes of temperatures
- Glaciations
- Continental drift
APPEARS IN
संबंधित प्रश्न
Species that possess a very high risk of extinction due to rapid population decline of about 50 - 70 % over three generations is designated as ______.
Acronym for IUCN is ____________.
The Red List of threatened species is published by ______.
What do you understand by ‘exotic species’?
Which of the following statements is correct?
Match the animals given in column I with their location in column II:
| Column I | Column II |
| A. Dodo | i. Africa |
| B. Quagga | ii. Russia |
| C. Thylacine | iii. Mauritius |
| D. Stellar's sea cow | iv. Australia |
Choose the correct match from the following:
What is common to the species shown in figures A and B?
 |
 |
| A | B |
Discuss one example, based on your day-to-day observations, showing how loss of one species may lead to the extinction of another.
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Enlist two criteria that are used to identify a region for maximum protection as 'Biodiversity hotspots'.
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
The species placed in CR category is ______.
What is the sustainable use of resources?
When a species goes extinct in one area, it is often desirable to re-introduce the species from other populations. A major problem with this approach is that ______.
Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?
Give definitions of Endangered species.
Name any two factors responsible for the loss of biodiversity in a geographical region.
Which one of the following is NOT one of the 'Evil Quartet' responsible for the loss of biodiversity?
