Mostly the ecological pyramids, i.e. pyramid of biomass, number and energy are upright as the producers are more than herbivores and herbivores... View Article
The pyramid of biomass of sea is mostly inverted due to the small standing crop of phytoplankton (primary producers) supporting a large standing... View Article
Rapid multiplication of algae in the water due to the presence of abundant nutrients are called algal blooms. Some algae produce toxins causing... View Article
The main causes of algal blooms are excess nutrients (rich in nitrogen and phosphorus), higher temperatures, slow-moving water and the presence... View Article
The rapid growth of algae in a water body is called an algal bloom. It is caused due to nutrient enrichment of water bodies, especially by... View Article
Since the origin of life on the earth, there has been five mass extinction of species. The five mass extinctions are: Ordovician-Silurian... View Article
Co-extinction refers to the extinction of a plant or animal species with the extinction of species that they are dependent on. E.g. when a fish... View Article
Invasive species cause the extinction of indigenous plants and animals leading to biodiversity loss. They compete with natives species for... View Article
Alien species may turn invasive and cause a decline or extinction of the native population so they negatively affect the ecosystem. Alien species... View Article
Alien species invasion is the major cause of biodiversity loss. They reproduce rapidly and compete with native species for food, water and space.... View Article
Alien species may become invasive and cause a decline in the population of indigenous species. An example of alien species is the Nile perch,... View Article
Decline or extinction of indigenous species of an area due to the introduction of alien species intentionally or unintentionally is known as... View Article
The biggest cause of habitat loss is the destruction of forests for various reasons such as the conversion of land for meeting the requirements... View Article
We can reduce habitat loss by using natural resources judiciously and by employing newer ways that cause the least damage to the habitat. It is... View Article
The three types of habitat loss are habitat destruction, habitat fragmentation and habitat degradation. Loss of habitat causes the extinction of... View Article
Human activities are the major causes of habitat loss, e.g. pollution, deforestation for development and urbanisation, mining, agriculture,... View Article
When a natural habitat of organisms is altered, e.g. rain forests, wetland, etc. such that it can no longer support the lives depending on it is... View Article
Due to water pollution and human activities, the eutrophication process is accelerated dramatically. It is called cultural or accelerated... View Article
