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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.
How are gases exchanged in sponges? The gas exchange in sponges occurs by diffusion from the external to the cells that absorb molecular oxygen and release carbon dioxide.
Define and compare bone modeling and remodeling Bone modeling is a surface-specific activity (apposition or resorption) that produces a net change in the sie and/or shape of a
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Similarities in body parts often indicate shared ancestry. Which of the following is true? Structures used for different purposes in different groups can be controlled by the same
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