How do pneumatic vacuums work?

How do pneumatic vacuums work? Compressed air-powered vacuums (also known as pneumatic vacuums) work on the venturi principle. Compressed air, via the air supply hose, enters the venturi box and travels through the injector. This low pressure induces vacuum flow inside the adjacent canister, and in turn through the attached vacuum hose. What is a […]

What animal in the ocean is a herbivore?

What animal in the ocean is a herbivore? Marine herbivores are found within four groups of species in the animal kingdom — invertebrates, fish, reptiles and mammals — and include zooplankton, mollusks, the green sea turtle, the marine iguana and some fish species. Manatees and dugongs are the only herbivores among marine mammals. What are […]

Is there another name for passion fruit?

Is there another name for passion fruit? The passionfruit is a pepo, a type of berry that has a hard outer rind without membranes within the fruit. Other names for passionfruit: maracuya (Spanish), grenadille (French), maracujá (Portuguese) and, of course, lilikoi (Hawaiian). 6. The flower of the passion fruit is the national flower of Paraguay. […]

How many Canada geese are in the world?

How many Canada geese are in the world? Waterfowl managers recognize seven subspecies of Canada geese in this flyway: Aleutian, cackling, dusky, lesser, Taverner’s, Vancouver, and western Canada geese. Populations of most of these subspecies have increased, with total numbers going from 180,000 in the 1970s to more than 600,000 birds today. How many Canadian […]

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