biosphere in the Biology topic by Longman Dictionary of Contemporary English | LDOCE | What you need to know about Biology: words, phrases and expressions | Biology
To explain two levels of biodiversity in the biosphere, we can focus on genetic diversity and species diversity. Here’s a step-by-step breakdown of each level:Step 1: Understanding Genetic Diversity - Definition</stron
from Chapter 4 / Lesson 2 59K The Earth's environment is divided up into four spheres: the atmosphere, biosphere, hydrosphere, and geosphere. Learn more about the differentiation and definition of each of the four spheres, and understand how the spheres interact with one another. Related...
In deserts, by definition, the water supply is very limited, and only those species that require very little water—for example, the varieties of cactus that grow in the American Southwest—are able to survive. But lack of water is not the only problem. Desert subsoils ofte...
Zhi XY, Li WJ, Stackebrandt E (2009) An update of the structure and 16S rRNA gene sequence-based definition of the higher ranks of the class Actinobacteria, with the proposal of two new suborders and four new families and emended descriptions of the existing higher taxa. Int J Syst Evol...
parasitism and predation. Exponential growth of computational resources harnessed to mastery of our genetic source-code promises a world where all sentient beings can flourish. The World Health Organizationdefinitionof health is admirably bold - "a state of complete physical, mental and social well-be...
even to less than 3.5 % of the total light period, is a sufficient entraining signal for nocturnal rodents (Decoursey1986; Decoursey and Menon1991). As such, despite their apparent subterranean existence, this species does not conform to the ‘dark’ or arrhythmic definition of subterranean,...
Life on planet earth is organized in a hierarchy. Levels that are higher on the hierarchy are more inclusive than levels that are found at lower levels. For example, a phylum would be more inclusive than an order. Answer and Expla...
Many biocidal factors must be considered for the complete definition of an aerial habitable zone; in this study we consider the constraint specifically from the perspective of biocidal solar ultraviolet (UV) intensity in the atmosphere. We simulated the penetration of solar ultraviolet and visible ...
The World Health Organization definition of health is admirably bold - "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". Arbitrarily restricting the promotion of such good health to members of a single species is as unwarranted as...