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
riadik2000 [5.3K]
3 years ago
9

Which of these is not a physical barrier of your body to disease?

Biology
2 answers:
olganol [36]3 years ago
5 0

Answer:

Chemical  is the right answer....

Helen [10]3 years ago
4 0
Mucous membranes is the answer
You might be interested in
Deb is studying the difference between 2 types of soil. She notices that her plants grow more when they have additional nitrogen
Dennis_Churaev [7]

The molecule, which the plant is most likely synthesizing using the extra nitrogen is PROTEIN.

Plants and animals do not have the capacity to use atmospheric nitrogen as nutrient. Atmospheric nitrogen has to be converted to forms that are usable by plants and animals before they can utilize it. Nitrogen fixing bacteria are the ones that are responsible for converting atmospheric nitrogen to the forms such as nitrate and ammonium, which can be used by plants. Animals get their own portion of nitrogen when they eat plants or other animals. Nitrate is the form of nitrogen that is mostly used by plants. Excess ammonium in plants are usually used directly to synthesize proteins. Nitrogen is a very important component of chlorophyll, which is essential for photosynthesis. Nitrogen is also found in the genetic materials of plants and it is needed for their growth and development.  Animals used nitrogen to synthesize proteins, nucleic acid and other biological compounds that contain nitrogen.

3 0
3 years ago
Can someone please help me answer these questions? i'll give the brainlest.
scZoUnD [109]
Ok so theirs this thing called asking your teacher for help especially when it’s such an easy question
5 0
3 years ago
Read 2 more answers
PLEASE HELP
natima [27]
Before the marble starts rolling, it is potential energy. Once it is rolling, it is kinetic energy. You know it stays the same because the marble probably would not be rolling if it weren't. All that's happening is that the ball is rolling faster because of gravity.


<span>Gravity assists the marble, leading to conservation of energy. The stored energy is release as momentum, the output of energy is constant.</span>
6 0
3 years ago
The bones in the wings of birds and bats are _______ because they derived from a _______ ancestor, while the wings are _______ t
ira [324]
Hey there,

Question : <span>The bones in the wings of birds and bats are _______ because they derived from a _______ ancestor, while the wings are _______ traits. 

Answer : </span><span>homologous; common; homoplastic 

Hope this helps :))

<em>~Top♥</em>
</span>
6 0
4 years ago
The disadvantages of inbreeding include ________.
lozanna [386]

Answer:

Explanation:

Inbreeding results which can increase the chances of offspring being affected by deleterious or recessive traits. This usually leads to at least temporarily decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Wax is secreted in the ear to reduce water and friction of sound waves. This is done by fat producing cells that break open alon
    15·1 answer
  • What is a example of hydrogen bonding between water molecules
    10·1 answer
  • A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C5H12. Pred
    10·1 answer
  • Is the concentration and size of boxes the same at all locations on the map? Explain your answer.
    15·1 answer
  • What is "seismic monitoring and how is related to "Snell's Law?"<br> Please help :)
    6·1 answer
  • What do you mean by photo synthesis​
    15·2 answers
  • 1.  Snapdragons can be red (RR), white (WW), or pink (RW).   Cross a red snapdragon with a pink snapdragon.  Give the genotype a
    7·1 answer
  • How would the Earth's climate be different if there were NO GREENHOUSE GASSES at all?
    13·2 answers
  • What are Mendel's two laws?​
    14·1 answer
  • Describe the Endosymbiotic theory
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!