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LIGHTAll of us know that the sun is the ultimate source of energy for all activities in our biosphere. The electromagnetic radiations from the sun supply energy which warms up the earth and the atmosphere to provide a favourable global temperature for the living organisms. In addition. light plays a variety of roles in the living world. It is essential for photosynthesis, the process by which light is converted into usable chemical energy. It is involved in the transmission of information, for instance, it helps plants and animals to programme their life cycles. coordinates the opening of buds and flowers, dropping of leaves and a variety of other physiological processes. Variation in theamount of light generally affects the local distribution of plants. In animals light regulates reproduction, hibernation and migration and of course makes vision possible. All these biological phenomena are readily influenced by variation in the intensity, and by seasonal or diurnal variations of light.
How old is the earth? It is believed that the earth is about 4.5 billion years old.
Extensive factor of Luria Nebraska procedure Extensive factor analytic studies have been accomplished, and the factor structure of each of the major scales has been recognized.
Q. How are the circulatory systems of animals classified? A circulatory system is classified as open or closed. In open circulatory systems blood gets out of vessels and flows
A complete motor neuron is deleted from a frog and placed in a large volume of normal physiological saline. The neuron is healthy; it has a stable resting voltage of -70 mill
Explain about the Basidiomycota - Fungi? Basidiomycota - Fungi in this division are called basidiomycetes or club fungi. Sexual structure is known as basidium, which is club-sh
Fungi are a very diverse group of organisms and have a significant impact on the production, spoilage and safety of food. Molds have not only served to synthesize antibiotics but a
Renal parenchymal disease is the commonest cause of secondary hypertension. Hypertensive and diabetic nephropathy and chronic glomerulonephritis are the main causes. Eventually, t
Why is AIDS difficult to prevent by vaccination? It is complex to produce a vaccine against AIDS because the HIV is a highly mutant virus. In almost every replication the produ
Importance of nutritional interaction :- Now being realized. Some nutrients are antagonistic to each other whereas others act synergistically. Examples of uniquely related
Excretory organs of agama lizard
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