The Causative Agent of Dengue Fever

The causative agent of Dengue fever is the Dengue virus, which is transmitted through the bite of Aedes mosquitoes.

How Dengue Spreads

• Aedes mosquitoes (especially Aedes aegypti) carry the virus and bite humans to transmit it.
• The virus causes flu-like symptoms like fever, joint pain, and skin rashes.

Example

• Aedes mosquitoes breed in stagnant water, like in flower pots or uncovered containers.

Summary: Dengue fever is caused by the Dengue virus, transmitted by Aedes mosquitoes, which bite during the day.

From 1981 to 2011, India experienced high population growth, peaking during the 1990s. Factors included improved healthcare and reduced mortality rates. However, growth began to decline post-2001 due to increased awareness of family planning, economic development, and urbanization, leading to a gradual decrease in the growth rate by 2011.

In Odisha, the key bauxite mining areas include Kalahandi and Koraput. Gujarat has significant deposits in the Panchmahals and Sabarkantha districts. In Jharkhand, bauxite is primarily mined in the Singhbhum district. These regions contribute substantially to India’s bauxite production, supporting aluminum manufacturing.

The Carboniferous period lasted from approximately 359 to 299 million years ago. It is characterized by vast swampy forests, extensive coal deposits, and high levels of atmospheric oxygen. The period saw the evolution of amphibians, early reptiles, and a diverse array of plant life, including ferns and seed plants.