1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lora16 [44]
3 years ago
13

Which structures are part of the body's first line of defense against pathogens?

Biology
1 answer:
Ad libitum [116K]3 years ago
5 0
White blood cells which forms the immune system
You might be interested in
Suppose you found a fossil of a clam shell what can you conclude about the once-living organism and how it became a fossil?
Stolb23 [73]

Answer:

Identifying the fossil is the first step. We have already identified this fossil as a clamshell. We know clam are from the sea, but if you didn't, you could conclude this from knowing where you found the fossil (likely near the beach). Discovering where it is can also lead you to a conclusion on it's arrival as a fossil, perhaps washed up on shore or buried by an animal.

Explanation:

8 0
3 years ago
Read 2 more answers
What does ATP stand for in biology?
valentina_108 [34]
It is called Adenosine Tri-Phosphate



  

6 0
3 years ago
The function of pulmonary ventilation is to ___________.
lara31 [8.8K]

Answer:

The function of pulmonary ventilation is to b. maintain adequate alveolar ventilation.

Explanation:

<em>Pulmonary ventilation refers to the movement of air into and out of the lungs, so its main function is to maintain adequate alveolar ventilation.</em> The air moves out of the lungs when the pressure inside the lungs is greater than the pressure in the atmosphere. In the lungs, Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. That's how the oxygen gets into the bloodstream.

8 0
3 years ago
The _________ is the largest, best-known savanna.
nika2105 [10]

Hey there :)

Question- The _________ is the largest, best-known savanna.

☆ Serengeti plain

☆ savanna

☆ short grass prairie

☆ tallgrass prairie

Answer- <u>Serengeti plain</u>

In-Line answer- The <em><u>Serengeti Plains</u></em> is the largest, best-known savanna.

A little about it-

<u>The Serengeti plains</u> is best known for the huge herds of plain's animals, and it is the only place in Africa where vast land-animal migrations still take place. The park is an international tourist attraction, was added to the UNESCO World Heritage List. It spans about 12,000 square miles (30,000 square kilometers).

~ Benjemin360

5 0
3 years ago
Which terms best describes our atmosphere?
makkiz [27]

Answer:

c.dynamic, interacting,constantly changing

5 0
3 years ago
Other questions:
  • What do you think the organism is
    7·2 answers
  • Which compound was abundant in Precambrian Earth’s oceans, before complex life evolved on Earth?
    8·2 answers
  • Sperm in the lumen are unable to move independently and require ________ to move through the tubules of the testes.
    6·2 answers
  • Cloning an individual usually produces orangisms that
    5·2 answers
  • What does a plant's large central vacuole hold?
    7·1 answer
  • Structure such as the human tailbone or appendix that evolution has reduced in size because it is no longer used 2. study of the
    7·1 answer
  • Select the correct answer. Where does most of the world's population tend to settle? A. near mountain valleys B. wherever the he
    13·2 answers
  • The physical appearance of long horns is an example of what scientists would call a phenotype
    7·2 answers
  • The blending of two traits in which one is not completely dominant over the other is known as
    14·1 answer
  • A girl holds her breath for 30 seconds, breathes out, and then breathes in. Compared with the air she breathes out, the air she
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!