Answer: The lungs are well supplied with blood due to lots of capillaries covering the alveoli, constantly maintaining a large diffusion gradient, air is able to pass easily down this gradient due to the alveoli having very thin walls (one cell thick).
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The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. Here are some features of the alveoli that allow this: they give the lungs a really big surface area. they have moist, thin walls (just one cell thick)
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Explanation:
Dozens of tower cranes dot DC's skyline, and so many of them are building new high-rise apartments that the District now ranks ninth among US cities with the most housing units under construction. It sure looks like a lot of new housing supply is being built, and certainly plenty of new luxury apartments within the District. However, the downtown high-rises under construction only tell half the story of Greater Washington's housing growth story.
While all those cranes are easy to see from afar, what isn't immediately apparent from the airport (but might be from a plane) is that many fewer acres of the countryside around us are being bulldozed for subdivisions–which for the past century has been where most lower-cost, low-rise housing was built. As a result, the region as a whole isn't building enough housing for our rising population.
Reducing sprawl is good, but we haven't built enough housing in city cores to meet demand
Fewer than half as many single-family houses are being built at the suburban fringes of Greater Washington every year, compared to the region's long-range average. Taken together, the single-family houses that aren't being built around Greater Washington each year would cover four square miles–an area the size of Rock Creek Park. The slower pace of suburban development over the past ten years has meant tens of thousands of acres of farms and forests around our region haven't been bulldozed for subdivisions and strip malls.
Answer:
There have been glacial deposits founded in the tropics and coal founded in Antarctica. This supports the theory of the Continental Drift, because coal originates from tropical plants, which can only be founded in the tropics. Additionally glacial deposits can only come from Antarctica, proving the theory.
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Answer:
energetic charged particles, most of which originate from the solar wind, that are captured by and held around a planet by that planet's magnetic field.
Explanation:
Answer/Explanation:
The Golgi body is a system of flattened sacs that is involved in the packaging, modification, and transport of proteins. It is particularly important for proteins that have to be transported outside of the cell.
Proteins from the Golgi that are to leave the cell are transported in vesicles. When they reach the membrane, the vesicles fuse with it and release the proteins outside of the cell
