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LekaFEV [45]
2 years ago
9

Which of the following about the biosphere is true?

Biology
1 answer:
dimaraw [331]2 years ago
3 0

Answer:

c. it can be considered a global ecosystem

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Which is an immune response ?
Westkost [7]

Answer:

The immune response is your body's third line of defense. In this response, your body releases B-Cells and T-Cells to fight the antigen and destroy it.

Explanation:

Hope this helps!

8 0
3 years ago
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Air pollution is a<br> __________ to survival
viva [34]

Answer:

needed

Explanation:

its pretty mandatory lol

7 0
2 years ago
During a choking episode, most foreign objects are more likely to become lodged in the ________ bronchus due to its larger diame
yKpoI14uk [10]
There are choices for this question namely:

<span>right primary
right secondary
left secondary
left primary
</span>
The correct answer is "right primary" or the right main bronchus. Anatomically, the right main bronchus has a larger diameter and a steeper angle (to compensate for the location of the liver). When a foreign body is accidentally aspirated, most commonly, it will lodge on the right main bronchus; especially in children.
8 0
3 years ago
All of the following protect the skin and mucous membranes from infection except
leva [86]

The question is incomplete. Th ecomplete question is as following:

All of the following protect the skin and mucous membranes from infection EXCEPT  

A) multiple layers of cells.

B) tears.

C) saliva.

D) HCl.

E) the "ciliary escalator."

Answer: D) HCl.

Explanation:

  • The epidermis, the outer layer of the skin provides waterproofing and serves as a barrier to infection and other laers also sustain any type of injury.  
  • Tears wash out foreign bodies which enter the eye. In addition, tears contain a substance called lysozyme which has an antibacterial function and works to prevent microbial invasion and infection.  
  • Saliva protects against infection, especially via the innate immune system. This mechanism is an important first-line protection against bacterial and viral infection
  • The mucociliar escalator is within the conducting airways and is composed of mucus and cilia that transfer the mucus up and out of the lungs where it can be removed by coughing or swallowing,

Whereas HCL helps in the digestion process.

Hence, the correct option is D.

5 0
3 years ago
Type of patter:<br> Energy or matter?:
e-lub [12.9K]
There are 4 fundamental states of matter: solid, liquid, gas and plasma. Energy is the ability to cause change or do work. Some forms of energy include light, heat, chemical, nuclear, electrical energy and mechanical energy.
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