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The cyclic exchange of nutrient material between organisms and non-living environment is called biogeochemical cycle ,'geo means earth: ''chemical' means chemical elements, thus biogeochemical cycle can be explained as cycle paths in which circulation of all essential elements takes place from the environment to the organisms and back to the environment some important biogeochemical cycles are as follows:
1. Water cycle or hydrological cycle
2. Oxygen cycle
3. Nitrogen cycle
4. Carbon cycle
5. Sulphur cycle
6. Phosphorus cycle
The first are gaseous cycles as they circulate between land and atmosphere where as the last one is sedimentary cycle it does not the atmosphere.
Q. Symptoms of ulcerative colitis? As discussed in the case study above, the common symptoms are: 1. Mild abdominaI discomfort, an urgent need to defecate several times a da
What are the physiological systems known as integrative systems? Why is this designation justified? The integrative systems are the nervous system and the endocrine system. The
KIDNEY S - Origin . They develop from the mesoderm of the embryo. The kidneys secrete three hormones: renin, erythropoetin and calcitriol. (i) Renin . Whenever the rat
Explain the Virtual Dissection of the Rat in multimedia tutorials? This animation will teach you about basic mammalian anatomy. The major organ systems in a rat are very simila
discribe tha bantham and hookers systeam of classification
Fibroids, also called as leiomyomas, are benign smooth muscle tumors that happen in the uterus. They grow under the influence of estrogen and progesterone, and are therefore seen i
What is the Speech Perception Test The subject is asked to listen to a series of 60 sounds, each of which consists of a double e digraph with varying prefixes and suffixes. The
Q. What is the chorioallantois membrane present in the embryonic development of birds and reptiles? How does this membrane participate in the energetic metabolism of the embryo?
Aeolian Wind transported materials constitute this category. This can be further divided into dunes or loess. Dunes are found in thr& types of situations. Fitly, these may occu
Define the effect of Zinc Deficiency? Zinc deficiency was identified for the first time in 1940 when malnourished Chinese patients were found to have low concentrations of zinc
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