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BigorU [14]
3 years ago
9

How do the structures of alveoli and capillaries support the function of gas exchange?

Biology
1 answer:
shepuryov [24]3 years ago
5 0
It makes the surface very thin, shortening the distance of which the gas has to move
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Improved functional health can be a positive influence on which health risk/
Valentin [98]
<span>An improved functional health can have a positive influence on physical inactivity for this is a modifiable risk factor.  The prevalence of improve functional health is higher than physical inactivity compare to other risk factors because this will encourage an individual to have a physical activity such as biking, swimming or any routine physical fitness. </span>
4 0
3 years ago
Which type of succession occurs when communities form in an area that was previously uninhabited by organisms?.
Ghella [55]

Answer:

Secondary succession

Explanation:

When a previously occupied area gets colonized by a new dominant group of species or communities, this is known as secondary succession. In secondary succession, new residents take the place of earlier groups in a habitat that has been affected by an ecological disturbance.

4 0
1 year ago
using your knowledge of skeletons and land adaptations, put the subgroups of chordate animals in their order of complexity (rept
dangina [55]

Bony fish, amphibian, reptile, bird, and mammal.

define amphibian ?

Amphibians are four-limbed, ectothermic animals that belong to the class Amphibia. The phylum Lissamphibia includes every extant amphibian. They live in a broad range of habitats, with the majority of species being found in freshwater aquatic, terrestrial, fossorial, or arboreal settings. Therefore, amphibians normally begin their lives as aquatic larvae, but certain species have evolved behavioural adaptations to get around this.

The young typically transition from a larval stage with gills to an adult form with lungs. Some tiny terrestrial salamanders and frogs rely solely on their skin for respiration, whereas amphibians use their skin as a supplementary respiratory surface. Although they resemble lizards on the surface, reptiles, like mammals and birds, are amniotes and do not need bodies of water to survive.

Bony fish, amphibian, reptile, bird, and mammal.

To learn more about amphibian follow the given link: brainly.com/question/2292336

#SPJ4

5 0
1 year ago
Do all eukaryotic cells contain a cell wall
romanna [79]

Many kinds of prokaryotes and eukaryotes contain a structure outside the cell membrane called the cell wall. With only a few exceptions, all prokaryotes have thick, rigid cell walls that give them their shape. Among the eukaryotes, some protists, and all fungi and plants, have cell walls.


3 0
3 years ago
A certain buffer is made by mixing a weak acid HA and its conjugate base A–. When HA is present at a concentration of 0.5 mM and
MAVERICK [17]

Answer:The ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02 is 0.69

Explanation:

The dissociation constant for formic acid = K_a=1.8\times 10^{-4}

Concentration of HA= 0.5 mM

Concentration of A^-= 0.1 mM

pH = 6.16

First we have to calculate the value of K_a.

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[A^-}{[HA]}

Now put all the given values in this expression, we get:

6.16=pK_a+\log (\frac{[0.1]}{0.5})

pK_a=6.86

To calculate the ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02.

Using Henderson Hesselbach equation :

7.02=6.86+\log \frac{[A^-]}{[HA]}

7.02=6.86+\log \frac{[A^-]}{[HA]}

\frac{[A^-]}{[HA]}=1.44

\frac{[HA]}{[A^-]}=0.69

Thus the ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02 is 0.69

7 0
3 years ago
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