The four important characteristics of respiratory surface are:
1. Thin walls
2. Moisture
3. Large surface area
4. Blood supply
Respiratory system or respiratory tract is divided into upper and lower tract. Upper respiratory tract includes nose and its cavities, sinuses, pharynx and the part of the larynx. Lower respiratory tract consists of the trachea, bronchi, bronchioles and the alveoli.
Alveoli are the ends of the respiratory tract the smallest units in it. Alveoli are small folded air sacs that are branching off from alveolar ducts and providing an extremely large surface area for the gas exchange. Gas exchange occurs thanks to small blood vessels – capillaries that surround alveoli and it occurs via the process of diffusion.
So, respiratory surface is thin membrane also known as the blood–air barrier that consists of the alveolar epithelial cells, their basement membranes and the endothelial cells of the alveolar capillaries.
Answer:
I believe the answer is A: a decrease in the mice population
Answer:
I believe it is Hubble's law but I could be wrong
<span>Which storm is likely to cause quick destruction along a narrow path?
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<span>A.tornado
B.hurricane
C.thunderstorm
Your answer would be a A.Tornado
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<span>Which clouds are best associated with a thunderstorm?
A.high cumulonimbus
B.towering funnel clouds
C.swirling clouds with a calm center</span>
Thunderstorms occur in association with a type of cloud known as a cumulonimbus. So, <span>A.high cumulonimbus
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<span>Which statement best describes the formation of a hurricane?
A.Air pressure differences over the ocean cause fast, spinning winds.
B.An updraft of warm, moist air builds a cumulonimbus cloud.
C.A downdraft of air meets spinning updrafts.
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Hurricanes begin as tropical storms over the warm moist waters of the Atlantic and Pacific Oceans near the equator. As the moisture evaporates it rises until enormous amounts of heated moist air are twisted high in the atmosphere.
<span>A.Air pressure differences over the ocean cause fast, spinning winds.
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<span>How are hurricanes and thunderstorms similar?
A.Both cover an area as large as 650 km.
B.Both involve the formation of large cumulonimbus clouds.
C.Both form when warm air rises, then cools quickly to form clouds.</span>
Hurrica<span>nes and thunderstorms are both convective storms fueled by warm, moist air. </span><span>C.Both form when warm air rises, then cools quickly to form clouds.
</span><span>Is this statement true or false?
Hurricanes are classified by three stages in which updrafts of air
billow up, updrafts and downdrafts swirl the wind up and down, then
downdrafts cause clouds to come apart.
A.True
B.False
This would be true
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<span>Which severe weather condition forms over warm, tropical areas?
A. tornado
B. hurricane
C. thunderstorm
</span>
Thunderstorms result from the rapid upward movement of warm, moist air. They can occur inside warm, moist air masses and at fronts. As the warm, moist air moves upward, it cools, condenses, and forms cumulonimbus clouds that can reach heights of over 12.45 miles.
Hurricanes develop in warm, tropical regions where the
water is at least 80 degrees Fahrenheit The
storms also require moist air and converging equatorial winds.
A tornado can form where winds blow at
different speeds causing rotation which can tighten and speed into a
funnel cloud if caught in the flow of air moving into the storm.
Rain and hail can cause the funnel to bend downward.
<span>B. hurricane is your answer
Hope it helped :)
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