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
likoan [24]
3 years ago
11

Which statement describes many of the structures involved in the first line of defense of the immune system​

Geography
2 answers:
DochEvi [55]3 years ago
6 0

Answer: They have contact with the external environment.

(I took a test over this and got this question right)

devlian [24]3 years ago
5 0

Answer: physical and chemical barriers

Explanation:

physical and chemical barriers try to prevent pathogens from getting inside the body

You might be interested in
What properties does the asthenosphere have?
Lorico [155]

Answer:

The properties of the asthenosphere are:

1.  highly viscous

2. mechanically weak

3. ductile region of the upper mantle of the Earth

7 0
4 years ago
Read 2 more answers
Which of the following is NOT a part of the geographic region referred to as "Middle America"?
lions [1.4K]
The answer for this is D
4 0
3 years ago
On a coordinate plane, 2 exponential functions are shown. f (x) = 5 Superscript x Baseline approaches y = 0 in quadrant 2 and in
kiruha [24]

Answer:

k = -7

Explanation:

Given

f(x) = 5^x through (0,1) and (1,5)

g(x) = 5^x + k through (0,-6) and (1,-2)

Required

Determine the value of k if f(x) is translated vertically down

To get the value of k, we perform the following operations.

For (0,-6) --- Substitute 0 for x and -6 for g(x) in g(x) = 5^x + k

g(x) = 5^x + k

-6 = 5^0 + k

-6 = 1 + k

k + 1 = -6

k = -6 - 1

k = -7

For (1,-2) --- Substitute 1 for x and -2 for g(x) in g(x) = 5^x + k

g(x) = 5^x + k

-2 = 5^1 + k

-2 = 5 + k

k+5 = -2

k= -2-5

k = -7

To further show that k = -7, we have the following:

f(x) = 5^x

When translated downward by 7 units, the function becomes

g(x) = f(x) - 7

Recall that: g(x) = 5^x + k and f(x) = 5^x

So, we have:

5^x + k = 5^x - 7

Subtract 5^x from both sides

5^x - 5^x + k = 5^x - 5^x + 7

k = -7

3 0
3 years ago
Read 2 more answers
Which is not a form of rock deformation?
IrinaK [193]

<u>Erosional deformation </u>   is not a form of rock deformation.

Answer: Option B

<u>Explanation:</u>

Rocks are all the time being subjected to force within the surface of earth because of which these rocks tend to twist, bend or get fractured. This causes the rock to change in their shape or size which is known as the deformation of rock and this deformation is affected by temperature, rock type, time and the pressure. Rocks deform in two ways which are ductile and brittle deformation.

6 0
3 years ago
Which of the following is NOT a primary source?
vesna_86 [32]

Answer:

a documentary about the holocaust

Explanation:

documentaries contain primary sources like pictures and videos however they are interpreting them so they are typically not seen as a primary source as a whole

5 0
3 years ago
Other questions:
  • What is the main difference between different types of map projections?
    6·1 answer
  • Do more people live in Northern Mexico or Southern Mexico?
    15·2 answers
  • What is the dominant climate of Mexico
    13·1 answer
  • How many solar systems are in the Milky Way Galaxy?
    14·1 answer
  • True or false? a rift valley forms where the land is splitting apart​
    12·1 answer
  • Match the type of region in column 1 to the example in column 2
    6·2 answers
  • The book Our Stolen Future was important because it ________. a. was the first book that discussed environmental problems with D
    7·1 answer
  • Match the ring of fire element in column 1 to the characteristics
    8·1 answer
  • Please someone write a short essay for me
    7·1 answer
  • The barrier islands<br> protect the mainland<br> from: (Georgia btw)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!