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inessss [21]
3 years ago
9

How does the structure of alveoli maximize gas exchange?

Biology
1 answer:
Bumek [7]3 years ago
3 0

Answer:

The alveoli are sacks coated on their inner wall by white and sticky liquid, they can be more than a millimeter in diameter and surface active agent. In them there is the exchange of gases between O2 and CO2.

They are evaginations of the epithelium of the air ducts with a single opening for the gases to exit and enter, controlled by the action of a smooth muscle sphincter. Its walls, called alveolar septa, provide a large increase in the exchange surface.

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In many ways the Sun is an average star. What is something unique about the Sun?
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Answer:

It's a loner compared to other stars.

Explanation:

Most stars have a companion, with some part of a triple or even a quadruple system.

8 0
3 years ago
Plz help oh and one of the questions is what percent of energy does an individual get from the individual it eats
liraira [26]

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3. The energy pyramid represents energy flow in a community, where the different levels represent different groups of organisms.  

The food chain is a circulation of energy that comes from the sun and passes from the producer organisms to the primary consumer, secondary and tertiary consumer organisms.  

4. For example, plant is producer that is eaten by primary consumer-herbivore (e.g. bugs). Than secondary consumer-carnivore (e.g. snake) eat that herbivore and than is being eaten by tertiary consumer (apex predator that have no natural predator).  

5. One trophic level gets only 10% of the energy of the previous level. So, if the plant have 10.000 units of energy and is eaten by rabbit, rabbit gets 1000 units of energy, and when the fox eats an rabbit, it gets 100 units of energy.  

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7 0
3 years ago
4. How successful was Biosphere2?​
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7 0
3 years ago
Grasslands are _______.
dmitriy555 [2]
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7 0
3 years ago
HELP ME PLEASE PLEASE PLEASE!!!!!
Elis [28]

Answer:

I think it's b but good luck and nice profile pic :D

6 0
3 years ago
Read 2 more answers
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