Notes and Study material for Exams
The Tundra: A Frozen Frontier of Life The word “tundra” evokes images of vast, desolate landscapes blanketed in snow and ice. While this perception holds some truth, the tundra is far from barren. It is a unique and resilient ecosystem, home to a surprising array of life adapted to survive in some of the harshest … Read more
Biological Weathering is the breakdown of rocks and minerals by living organisms. It is a type of Physical Weathering, which means that it does not involve any chemical changes. Biological weathering can be caused by a variety of organisms, including plants, animals, and bacteria. Plants can break down rocks by growing through them, while animals … Read more
Climate-Smart Agriculture: A Path Towards Sustainable Food Systems The world faces a daunting challenge: feeding a growing population while mitigating the impacts of climate change. This challenge is particularly acute in the agricultural sector, which is both a significant contributor to greenhouse gas emissions and highly vulnerable to climate variability. Climate-Smart Agriculture (CSA) emerges as … Read more
Intercropping: A Symphony of Species for Sustainable Agriculture The world’s population is growing, and with it, the demand for food. Traditional monoculture farming, where a single crop dominates a field, struggles to meet this demand while facing challenges like soil degradation, pest outbreaks, and reliance on synthetic inputs. A promising alternative lies in intercropping, a … Read more
Fresh water Ecosystems– The salt content of fresh bodies is very low, always less than 5 ppt (parts per thousand). E.g lakes, ponds, pools, springs, streams, and rivers Marine ecosystems – the water bodies containing salt concentration equal to or above that of sea water (i.e., 35 ppt or above). E.g shallow seas and … Read more
Each organism is different from other organisms. The total number of species living on the planet is imprecisely known and published estimates vary from 12 million to over 100 million. This is because there are large numbers of species yet undiscovered and undescribed, and there is not always agreement on whether certain organisms should … Read more
Fauna and Flora Geography: Wild Animals, Animals, Birds, Reptiles, Mammals, Trees and Plants and others Flora is the name given to the collective plant life that grows or once grew in a certain area or during a given time period. It usually refers to the native plant life present but does include new species that … Read more
Protected Area Networks: A Vital Tool for Conservation and Sustainable Development Introduction The Earth’s biodiversity is facing unprecedented threats from human activities, leading to alarming rates of species extinction and habitat loss. To address this crisis, conservation efforts have increasingly focused on establishing protected areas, designated spaces where nature is safeguarded from exploitation and degradation. … Read more
Ozone (O3) is a molecule made up of three atoms of Oxygen (O), and is mostly found in the strato- sphere, where it protects us from the Sun’s harmful ultraviolet (UV) radiation. Although it represents only a tiny fraction of the Atmosphere, ozone is crucial for life on Earth. The stratospheric ozone layer forms a … Read more
Eco-System-An ecosystem is defined as a structural and functional unit of Biosphere consisting of community of living beings and the physical Environment, both interacting and exchanging materials between them. It includes Plants, trees, animals, fish, birds, micro-organisms, water, Soil, and people. When an ecosystem is healthy (i.e. sustainable) it means that all the Elements live … Read more