The correct examples of physical (P), chemical (C), and biological (B) barriers is P: coughing; C: saliva; B: complement system.
What are barriers?Barriers are the immune defence mechanisms used by the body to prevent the invasion of microorganisms from causing harm.
Examples of immune barriers include:
Physical barrier: Example is coughingChemical barrier: Example is salivaBiological barrier: complement system.Learn more about immune system here:
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witch of the following is an example of newtons first law
a. using a force tp push a box
b. pulling back and arrow to shoot it forward
c. a table remains motionless in a classroom
d. none of the above
Answer:
c. a table remains motionless in a classroom
Explanation:
1. How are a whale and a fungus similar?
Which of the following is an abiotic reservoir? View Available Hint(s)for Part A birds soil the fish in the sea an algal bloom
Answer:B
Explanation:
(I will mark a brainliest )
which is better to live in? North Korea or south Korea? state their resources.
3 paragraphs!
(useless answers will be reported)
Answer:
South Korea is better because people believe that South Korea is more powerful even though the North has a stronger army.
While the North communist dictatorship the South offers its citizens far more freedom than the north does. (Fact: NK is one of the 5 communist countries in the world).
Lastly, South Korea is a safe place to visit and many people prefer it over the North.
please let
me know the answer to this
Answer: I think It is bacteria
True/False: All keystone species are animals.
Which of the following is TRUE about meiosis?
A.Cut the number of
chromosomes in half
B. Leaves the number of chromosomes the same 0
c. Doubles the number of chromosomes
D. Produces diploid cella
Answer: A and C
Explanation:
During Meiosis, the cell or chromosome splits in half, and the other halves grow back.
Which of the following is an example of an enzyme? Multiple Choice Sigma factor: the protein that binds to bacterial promoters to initiate transcription Insulin: the protein that tells cells to uptake glucose Keratin: the protein that gives cells structure Glucose transporter: the protein that allows glucose into cells ATP-synthase: the protein that produces ATP from ADP and P
Answer:
ATP-synthase: the protein that produces ATP from ADP and P
Explanation:
Proteins have diverse functions. Enzymes are very specific type of proteins with catalytic activity, help run reactions, and help with metabolism.
ATP-synthase is an enzyme in electric transport chain which allows us to make ATP using the electrochemical gradient in mitochondria.
3. What would be an example of deposition?
Answer:
frost
Explanation:
Frost is the deposition of water vapour from humid air or air containing water vapour on to a solid surface. Solid frost is formed when a surface, for example a leaf, is at a temperature lower than the freezing point of water and the surrounding air is humid.
In sub-freezing air, water vapour changes directly to ice without first becoming a liquid. This is how frost and hoar frost form on the ground or other surfaces. Another example is when frost forms on a leaf.
In your own words wright a paragraph of the process of the circulatory system.4-7 sentences
Answer & Explanation:
The circulatory system, also called the cardiovascular system transports oxygen-rich blood from the heart to the lungs. The heart then circulates oxygenated blood throughout the body via arteries. The veins return oxygen-depleted blood to the heart, restarting the circulation process.
When are conservation efforts most effective?
a.
Conservation efforts are most effective when multiple groups cooperate.
b.
Conservation efforts are most effective when government is solely responsible for them.
c.
Conservation efforts are most effective with individual efforts.
d.
Conservation efforts are always effective.
Please select the best answer from the choices provided
A
B
C
D
Answer:
A 100%
Explanation:
just took the test on edge
Why will the demand for fossil fuel have to change in the future?
Why will the demand for fossil fuel have to change in the future
Answer-
The demands of fossil fuel have to change in the future
because the Earth would eventually run out of them do to high
demand. (Fossil Fuel consumption- 86% of energy generated in the U.S)
Many people depend on fossil fuel more than any type of enery source.
Ex (Most people use them for gas for there car)
Given the cascade of events leading to ischemia-produced brain damage, it has been suggested that __________ antagonists administered immediately after a stroke might reduce the subsequent development of brain damage.
Answer: glutamate
Explanation: Given the cascade of events leading to ischemia-produced brain damage, it has been suggested that glutamate antagonists administered immediately after a stroke might reduce the subsequent development of brain damage.
The san marcos salamander, eurycea nana, is a light reddish-brown translucent salamander about 2–5 cm in length. E. Nana is found only in spring lake and a portion of the san marcos river. Which human activity would most likely decrease the ability of the salamanders to survive?.
Human activity would likely decrease the salamanders' survivability is the growth of cities, which has led to greater use of water by people and increased problems of water pollution and sludge buildup.
What leads to the disappearance of the species?Reducing the flow of water from springs is the biggest threat to the survival of Salamandra San Marcos and other animals and plants dependent on the springs. The growth of cities has led to greater use of water by people and has increased problems with water pollution and sludge buildup. The introduction of non-native species is also a threat because they can destroy aquatic vegetation, attack endangered animals or compete with them for food.
With this information, we can conclude that human activity would likely decrease the salamanders' survivability is the growth of cities, which has led to greater use of water by people and increased problems of water pollution and sludge buildup.
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Which property of water causes the space between molecules to ice
Answer:
In ice crystals, their hydrogen bonds link them together like acrobats, stacked one on top of the other, with their arms and legs outstretched. This provides more space between the molecules in the crystal structure of ice than the molecules of liquid water. As a result, ice is less dense than the liquid form
Explanation:
Hope this helps.
an ecology graduate student gave an oral report. What important lesson has been learned about wildlife and forest management since the turn of the century, based on this information -
The important lesson learned is that the study of ecology can be fundamental in a management program.
What is ecology management?The expression 'ecology management' makes reference to the strategies aimed at enhancing the ecological features of a geographic area.
Ecology management is a fundamental issue to achieve sustainable ecology development.
In conclusion, the important lesson learned is that the study of ecology can be fundamental in a management program.
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how does the material and color of the jacket affect heat absorption?
What are two simple things people can do to conserve energy?
Determine whether the following actions are harmful to the environment or help to conserve the environment.
harms the environment
conserves the environment
Coach Luke encourages his football team to wear biodegradable
sneakers. The sneakers can be buried in the ground when they are
wom out, and after many years, they will decompose like a plant.
Chef Sonia uses disposable, nonbiodegradable kitchen towels in her kitchen. She uses them for everything from cleaning up spills to wiping her hands. She ends up using about two rolls in a month.
Sheila lives in Arizona. Because she lives in an area that receives plenty
of sunlight, she installs solar panels on her roof. More than 70% of the
electricity Sheila uses is generated by the panels. While she paid a
substantial amount for the installation, her monthly electric bill has decreased dramatically
Coach Luke encourages his football team to wear biodegradable sneakers. The sneakers can be buried in the ground when they are worn out, and after many years, they will decompose like a plant. This condition conserves the environment.
What do you mean by Environment?An environment may be defined as anything which is present in the surroundings of living entities that is either biotic or abiotic factor.
Chef Sonia uses disposable, nonbiodegradable kitchen towels in her kitchen. She uses them for everything from cleaning up spills to wiping her hands. She ends up using about two rolls in a month. This condition harms the environment because the towels are nonbiodegradable in nature.
The last situation conserves the environment because it utilized solar panels for energy production which is efficient in cost as well as helpful for the environment.
Therefore, each situation is mentioned above.
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Answer:
This is just to show how it should look ^^
How would you handle new team members if you were an it manager?
a)schedule a kick-off meeting.
b)do nothing.
c)send them an e-mail outlining their responsibilities
d)tell other team members to speak to them
please help me its in career explorations 2
will give the brainiest
Match each term to the appropriate definition.
speed with direction
change in velocity
how fast an object moves
location used for comparison
velocity
reference point
acceleration
speed
Answer:
velocity- speed with direction
reference point- location use for comparison
acceleration-change in velocity
speed- how fast an object moves
Please answer this workout! I’ll give brainliest!
Describe how energy for the photosynthesis reaction is gained by plants.
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Under the conditions that in the presence of sunlight and chlorophyll, carbon dioxide reacts with water molecules to produce glucose and oxygen
The __________ nervous system consists of motor neurons that regulate skeletal muscle contractions.
Answer: Somatic neurons regulate skeletal mustle contractions
3. A cell with 10 chromosomes undergoes mitosis.
(a) How many daughter cells are created:
Answer:
In a cell with 10 chromosomes undergoes mitosis, the result are 2 daughter cells each with 10 chromosomes
Explanation:
Cells have the ability to reproduce or replicate through 2 processes:
Mitosis
Meiosis
Mitosis differs from meiosis because the final result is always
2 daughter cells
The daughter cells are identical to the mother cell and this includes the same number of chromosomes
This means in mitosis 1 cell with 10 chromosomes leads to two identical cells each with 10 chromosomes.
3. In the Pacific Ocean, there is a plate boundary between two tectonic plates: the Pacific Plate, which contains some of
the oldest oceanic crust on Earth, and the Mariana Plate. The Mariana Trench, the deepest oceanic trench on Earth,
is located at this boundary. Nearby, there is an arc of volcanic islands called the Mariana Islands. Based on this
information, what type of plate boundary is this? How do you know?
Ocean trenches are long, narrow depressions on the seafloor. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth.
There are different types of plate boundaries based on the movement of tectonic plates. The plate boundary in which a line of volcanic islands are present is called convergent plate boundary.
What is plate boundary?Plate boundary is the inter-region between two tectonic plates. The magma in the crest when undergo convection process and flow of this heated magma causes the movement of tectonic plates.
Based on the movement and sliding of the plates above the other there are three types of plate boundaries namely, divergent, convergent and transform plate boundaries.
Divergent plate boundaries originates when the plates moves apart these type of plate boundaries have the volcanic activities and shallow earth quake.
Convergent plate boundaries are where, the plates are moving edge to edge manner each other manner and buckles up to mountain. Convergent plate boundaries create the a chain of volcanoes parallel to the plates.
Transform plate boundary is created by plates sliding past each other which forms no volcanoes. Hence, the volcanic islands are in convergent plate boundary.
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Sulfates are considered secondary pollutants because.
Sulfates are considered secondary pollutants because they result from the transformation of primary pollutants.
Reason: Primary pollutants are pollutants emitted directly into the environment while secondary pollutants are emitted after they are formed in the atmosphere.
Hope that helps!
.
mutations that result in phenotypes that are favored by natural selection are known as
harmful
beneficial
somatic
gamete
Answer:
beneficial
Explanation:
beneficial mutations cause phenotypes that allows organism to have more fitness (like more offspring) and be favored by nature.
A student is investigating how reaction rate changes over a range of enzyme concentrations. The student uses excess reactants
Which of the following graphs best represents the relationship between enzyme concentration and reaction rate?
13. Give one use for ethyne.
Answer:
Ethyne is useful for artificial ripening and preservation of fruits. It is useful in acetylene lamps to generate light. Ethyne is used to prepare various organic compounds. It is also useful to manufacture important organic compounds like acetic acid, acetaldehyde, ethyl alcohol and polymers like PVC, etc.
Explanation:
Since ethyne burns with a very hot flame, one of its most notable applications is in oxyacetylene gas welding and oxyacetylene gas cutting. When ethyne is subjected to combustion with oxygen, the flame created is known to have a temperature of roughly 3600 Kelvin.