What is the role of counter current mechanism in kidney?

What is the role of counter current mechanism in kidney? The counter-current multiplier or the countercurrent mechanism is used to concentrate urine in the kidneys by the nephrons of the human excretory system. As urine flows downwards in the collecting tubule, it encounters higher and higher concentrations of solutes in the interstitium. What is the […]

What are the three main types of dictatorship?

What are the three main types of dictatorship? Between the two world wars, three types of dictatorships have been described: constitutional, counterrevolutionary and fascist. Since World War II, a broader range of dictatorships has been recognized, including Third World dictatorships, theocratic or religious dictatorships and dynastic or family-based dictatorships. What are the advantages of a […]

Do sharks migrate?

Do sharks migrate? Sharks, like many other animals, migrate for purposes of mating and giving birth. These migrations are timed by seasons of the year, which cause water temperature changes that may trigger sharks to migrate to their breeding and pupping grounds. How far do great white sharks migrate? 2,500 miles Do sharks go south […]

What are some biotic factors in the Galapagos Islands?

What are some biotic factors in the Galapagos Islands? Biotic Factors: Arid Lowlands. Arid Zone. Subtropical Forests. Transition Zone. Dense Forests. Scalesia Zone. Rocky Shoreline and Volcanic Areas. Coastal Zone. Aquatic Ecosystem. What kind of biome is the Galapagos Islands? Lying in the Pacific dry belt most of the land in the archipelago is covered […]

Which plant has both an herb and a spice?

Which plant has both an herb and a spice? Some plants are both herbs and spices. The leaves of Coriandrum sativum are the source of cilantro (herb) while coriander (spice) is from the plant’s seeds. Dill is another example. The seeds are a spice while dill weed is an herb derived from the plant’s stems […]

Are shin guards necessary?

Are shin guards necessary? It is a requirement that you use shin guards when playing a match, and the referee can actually refuse you to play if you are not wearing shin guards. You may well risk that a refereee does not approve your shin guards up to the start of a match if he […]

What was life like in early Virginia?

What was life like in early Virginia? Early Virginia was a death trap. Of the first 3,000 immigrants, all but 600 were dead within a few years of arrival. Virginia was a society in which life was short, diseases ran rampant, and parentless children and multiple marriages were the norm. What are three interesting facts […]

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