When considering what constitutes the “best” ecosystem, we generally refer to ecological richness, biodiversity, productivity, and the system’s ability to support a wide range of life forms. Among all ecosystems on Earth, tropical rainforests are widely recognized as the most diverse and productive ecosystems. Here’s a detailed look at why tropical rainforests are often considered…
Theory of Continental Drift: Proposed by: Alfred Wegener (1912)Wegener, a German meteorologist and geophysicist, proposed that continents were once a single landmass that drifted apart over geological time.The Supercontinent – Pangaea. Around 300 million years ago, all landmasses were joined together in a supercontinent called Pangaea.Pangaea later broke into two major landmasses: Laurasia (North America,…
Palaeogeography is the branch of geology that reconstructs the historical geography of Earth’s surface. It seeks to understand how continents, oceans, mountain ranges, and other geographic features have changed position and form over geological time. By combining data from sedimentology, paleontology, stratigraphy, tectonics, and geochronology, Foundations of Palaeogeography The foundation of palaeogeography lies in the…
Neotropical Realm A. Geographical Boundaries:The Neotropical Realm includes South and Central America, the lower part of Mexico, and the West Indies. It is connected to the Nearctic Realm via the Central American Isthmus, while its other boundaries are defined by surrounding seas. B. Subdivisions:This realm is divided into four sub-regions: C. Climatic Conditions: Most of…
