Gradual
Taking place by a series of small changes over a long period, not sudden.
Dictionary > Gradual
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Freshwater Communities & Lentic Waters
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The size and depth of a still body of water are major factors in determining the characteristics of that ecosystem. Learn in this elaborate tutorial how life thrives in and influenced by a still-water habitat...
Leaves
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this tutorial, various plant processes are considered in more detail. It also includes topics on leaf arrangements, leaf types, leaf structure, leaf color, abscission, and importance to humans...
Growth and Plant Hormones
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respond well to their environment and to sustain growth, development, and dispersal. Plant biologists recognize five major groups of plant hormones: auxins, gibberellins, ethylene, cytokinins, and abscisic acid. Find out in this guide the importance of each hormone in the life of a plant...
The Dinosaurs
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...
Circulation
The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the different components and functions of the human circulatory system dealt with in detail in this tutorial. The lymphatic system is also elucidated elaborately here...
Sleep and Dreams – Neurology
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities of the unconscious mind. For more details, read this tutorial on sleep and dreams...
