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Q. How does the vegetal stratification of an ecosystem influence the biological diversity?
The vegetal stratification of the ecosystem like the strata of the Amazon Rainforest, creates vertical layers with peculiar abiotic and biotic factors dividing the ecosystem into several different environments. Thus in the superior layer near the crowns of big trees the exposition to light, wind and rain is greater but moisture is lower compared to the inferior layers. Because one goes down the strata the penetration of light diminishes and moisture increases. Regarding the biotic factors communities of each stratum present in reproduction strategies, differcomposition and features, food habits, and so on. Such variations in the biotic and abiotic factors make the selective pressure upon living beings to be also diversified, there are more ecological niches to be explored and more varied beings emerge during the evolutionary process.
Plankton - Aquatic Ecosystem This group includes both microscopic plants (phytoplankton) and animals (zooplankton) found in all aquatic ecosystems, except certain swift moving
Q. Etiologic factor of atherosclerosis? Various factors are responsible for atherosclerosis. These include: 1. Hyperlipidemin: Excess circulating fats in blood especially th
Why are salt and sugar used in the production of dried meat and dried fruits? Substances that maintain a highly hypertonic environment, such as sugar and salt, are used in the
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Q. What are extraembryonic membranes? Extraembryonic membranes are membranous structures that appear in parallel with the embryo and play vital roles in the embryonic developme
Darwin put fort the notion of the survival of the fittest. How do we define 'fittest'? The answer usually given is those who survive. So you can readily see that this is a circular
What is katal katal : the amount of enzyme that transforms 1 mol of substrate into product in one second.
Needlestick/sharp instrument injuries are of major concern to health care workers. All of the significant exposures reported in the academic year 2003/04 in our Faculty, were injur
Vital Signs of clinical evaluation Patient's clinical evaluation starts with the examination of certain vital signs which are: B.P. (Take average of two regarding with atlea
Q. Concerning their size and basic morphology how and why do the male and the female gametes differentiate from each other? The female gametes are big cells full of vitellus (n
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