Electrons
stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called cathode rays or beta rays, the latter being a high-energy biproduct of nuclear decay.
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..
This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..
