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nalin [4]
2 years ago
11

Bark of a tree is impervious to gases and water

Biology
1 answer:
Naddika [18.5K]2 years ago
3 0
The bark of a tree is impervious to gases and water because bark cells are dead cells of the epidermis and compactly arranged without intercellular spaces. They contain a chemical called suberin in their walls that make them impervious to gases and water and it doesn't allow gases or water into the tree as bark cells are in the bark outer most layer of the tree. 
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Storm winds knock down trees in part of a forest. Which of these effects of
omeli [17]

Answer:

C. Organism living in the fallen trees lose shelter.

Explanation:

talking about the effects of storm winds falling trees, it creates more light to reach shorter plant which will help the plants to do photosynthesis well, which will even facilitate their fast growth; that's positive.

Fallen trees becoming food for decomposers can also be positive cause this will help the soil or earth of that forest have fertility

New Clearing attracting animals such as man can lead to extinction of forest which to conservators they feel like no-no-no-no that's they'd see it as a negative consequence of the wind storm effect, yes this can lead to de-sheltering of organisms inhabiting that niche(trees)

3 0
1 year ago
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What will happen to the frequency of the recessive allele for the hbs gene when there is an outbreak of malaria? the frequency w
Ad libitum [116K]

In the outbreak of malaria, the frequency of the recessive allele for the HbS gene will increase. The correct option is A.

<h3>What is the HbS gene?</h3>

HbS is a beta-globin gene known as sickle hemoglobin.

It causes sickle cell disease in humans.

The disease is expressed by two HbS variants or one HbS variant or one another beta-globin gene.

Malaria is caused by the plasmodium parasite, which is present in the saliva of the mosquito.

Thus, the correct option is A, the frequency will increase.

Learn more about HbS gene

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1 year ago
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Please list and discuss the indications and steps used during endotracheal suctioning. Suggested Fundamentals Learning Activity:
vlabodo [156]

Answer:

need to be done with plenty of observation to avoid infection.

Explanation:

This technique is quite delicate because the main risk is infection. Some of the main risks are neuromuscular disease, sedation or neurological illness.

Another risk is that by passing the time, there is a difficult in respiratory, in this case, the main risk is directly to the heart, with some stoke, due to the high concentration of carbon dioxide due to the low exchange among oxygen and CO2.

Some of the indications are:

a.- Coarse crackles auscultated over trachea.

b.- Increase the respiratory pressure.

c.- Decrease tidal volume.

d.- Check the levels of oxygen in blood as in arteries.

e.- Check that patients can generate a cough.

Hope this info is useful.

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3 years ago
Match the number to the organ in the correct order to match the flow of air in and out of the respiratory system.
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Answer:

Nose, Trachea, Bronchi, Lungs (for inhalation)

Explanation:

Just reverse the answer for order of exhalation

3 0
2 years ago
@Physiology HELP
ikadub [295]
1. B<span>. oxygen because its a reactant 

2. I</span><span>ts c aerobic respiration produces more ATP molecules than anaerobic fermentation.

3. I</span>t is used to produce glucose molecules

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