Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soil and the factors (i.e. climate, parent material, local topography, vegetation, living organisms, and time) that brought soil to what it is today. ..
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like organisms. Because of the expanding diversity of animal life forms, taxonomists eventually came up with a classification scheme to group them into various phyla. Know more about the early animals that were likely the first ones to roam the ancient seas through this tutorial...
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understand how animals adapt to their habitat. For instance, how animals thrive in aquatic habitat and are able to overcome osmosis. It also sheds light on the reasons animals adapt...
The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more advanced receptors in the form of eyes, and develop various chemoreceptors. Since they possess such desirable features, their survival over the long term is apparent by their genetic diversity. Learn more elaborate details about arthropod evolution in this tutorial...
Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presumed to look a lot like the reptiles. As they continued to evolve, many of them became bigger and stronger. Read more about the evolution of dinosaurs and their subsequent extinction in this tutorial...
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig and the origin and development of stems. Also included are the different modified stems that carry out special functions. ..