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In a short answer, an ecosystem is the conjunction of biotic components (living organisms within the defined area) and abiotic components (the non-living objects or conditions surrounding those biotic compon...

Tuvieron is the correct answer, not to be confused with the third person plural of the preterite imperfect salieran. Take a look to the differences between them, and their meaning, that will make them easier...

Anaerobic conditios are those in which oxigen is not present, or present in very low quantities. Processes which are anaerobic tend to be found in stationary waters, and inside our muscles for example.

The law of diminishing returns refers to our production function in the short run. Remember, we define the short run as when we have at least on factor of production that is fixed. The easiest, and typical e...

First, it is important to define the features of the mammalian sleep wake cycle. Sleep-wake comes under the category of a circadian rhythm ; this is an approximately 25-hour cycle in the biochemical, physiol...