Answer:
The bird's respiratory system consists of paired lungs, which contain static structures with surfaces for gas exchange, and connected air sacs, which expand and contract causing air to move through the static lungs.
Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs. ... Bird lungs do not expand or contract like the lungs of mammals. In mammalian lungs, the exchange of oxygen and carbon dioxide occurs in microscopic sacs in the lungs, called 'alveoli.'
Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase respiratory efficiency by providing a large surface area for gas exchange.
How do birds respire?
Some birds can sing while they fly! ... When the bird takes a second breath, the air in the lungs is sucked into the cranial air sacs -caudal thoracic, cervical, and clavicular. The cranial air sacs act as a holding chamber which provides a small back flow of air into the lungs during expirations.
Explanation:
Using organisms from the food web, complete this food chain of four links.
....................................... rat ....................................... .......................................
Plant > Rat > Snake > Eagle
What is the cell process of a vacuole?
Answer:
To gain energy and digest
Explanation:
The ability not to taste PTC is dependent on recessive gene (t).
What are possible genotypes for tasters and non-tasters
Two parents , both tasters have an offspring with taster. What is the genotype of both parents. ? Show your work using punnett square.
Which is correctly matched with the
appropriate number of chromosomes
in each daughter cell?
A Meiosis: 2 sets of 23 chromosomes
B. Meiosis: 1 set of 23 chromosomes
C. Mitosis: 1 set of 23 chromosomes
D. Mitosis: 2 sets of 46 chromosomes
The match for the appropriate number of chromosomes in each daughter cell is "Mitosis: 2 sets of 46 chromosomes". Option D. This is further explained below.
What is Mitosis?Generally, Mitosis is simply a kind of cell division that produces two daughter cells with the same number and type of chromosomes as the parent nucleus, as seen in normal tissue growth.
In conclusion, "Mitosis: 2 sets of 46 chromosomes" matches the appropriate number of chromosomes in each daughter cell.
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why do we need to study the beginning of life?
. Human muscle cells compared to blood cells all contain the same number of
chromosomes with the same complement of genes. Yet, the hemoglobin protein
which helps to temporarily bond to oxygen is found in blood cells and not muscle
cells. Which of the following best explains this difference?
Help pls
Answer:
Correct answer to the question: human bone, muscle, and nerve ceils all contain the same number of chromosomes with the same complement of genes. what enables these cells to perform specialized activities
Answer: I think its B
Explanation:
why does the sodium potassium pump require ATP?
Answer:
The sodium–potassium pump is found in many cell (plasma) membranes. Powered by ATP, the pump moves sodium and potassium ions in opposite directions, each against its concentration gradient. In a single cycle of the pump, three sodium ions are extruded from and two potassium ions are imported into the cell.
Explanation:
Hope I helped!
explain why land is considered a resource?
Answer:
Land is an essential natural resource, both for the survival and prosperity of humanity, and for the maintenance of all terrestrial ecosystems. ... Increased demand, or pressure on land resources, shows up as declining crop production, degradation of land quality and quantity, and competition for land.
Low frequency waves:
A. have high amplitudes.
B. Have long wavelengths.
C. Travel at high speeds.
D. Have short wavelengths.
Answer:
Its A
Explanation:
Its A =Have high amplitudes
Low-frequency waves have long wavelengths. Therefore, option B is correct.
What are waves?
Waves are a type of disturbance that travels through a medium or space, transferring energy without transferring matter. Waves can take many forms, including sound waves, light waves, water waves, and electromagnetic waves.
Waves are characterized by a number of properties, including wavelength, frequency, amplitude, and velocity. Wavelength is the distance between two consecutive peaks or troughs in a wave, while frequency is the number of wave cycles that occur per unit of time. Amplitude is the height of the wave, and velocity is the speed at which the wave travels through the medium.
Low-frequency waves have longer wavelengths, which means that they have fewer cycles per second (measured in hertz) and take more time to complete one full cycle. Therefore, option B is correct.
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ill) Age changes in white blood cells include decreases in the number and rate of release
of stored cells, rate of movement, ability to be chemically attracted to areas, and
proportion of cells capable of performing phagocytosis. Explain how these changes will
affect the human body.
(2) PLEASE HELP... Reliable answer will receive brainliest.
Answer:
it will reduce the ability of white blood cells to guide against disease
would transition metals be in Metal, Nonmetal, or Metalloid?
Answer:
They would be in metals :)
need help explaining. will choose brainliest
Which of the following is not a random occurrence?
A selection of the best-suited traits for the environment, leading to adaptive evolution
Genetic drift changing the gene pool of a population and creating fluctuations in the allele frequencies
The bottleneck effect after an earthquake, resulting in a reduction of genetic variation
The founder effect, when a small population is isolated and the gene pool significantly reduced from the parent population
i chose A. Am i right or not? can pls help explain? tysm
Nonvascular plants differ from vascular plants by
A. how they transport water and nutrients.
B. how they move in their environment.
C.how they respond to their environment.
D. how they make their food.
A
Explanation:
vascular plants have tubelike structures that carry water,nutrient. nonvascular plants do not have these tubelike structures and use other ways to move water.
Jorge is exploring the ocean. On which of these journeys is he MOST LIKELY to pass from the photic zone into the aphotic zone?
A. a boat trip from the shore to the middle of the ocean
B. a boat trip from the middle of the ocean to the shore
C. a submarine dive from the surface into deep ocean water
D. a walk from the intertidal zone into shallow ocean water
what do grassland africa animas eat?
Answer:
Grazers like zebra and wildebeest eat grass and little else. Browsers giraffes nibble on leaves and shrubs—collectively called “browse”. Some animals, like elephants and impala, go for both. Within each category, animals partition themselves in space.
A star the size of our sun will end up as a?
A.neutron star
B.white dwarf
C. Black hole
Match the description with the corresponding fruit part.
1. the innermost protect layer around a fruit seed such as the shell of a peach pit
2. all the layers surrounding the seed of a fruit
3. the middle protective layer of a fruit seed; often the flavorful flesh
4. the outermost skin of a fruit
a. endocarp
b. pericarp
c. epicarp
d. mesocarp
Answer:edg
Explanation:
endocarp- the inner most protect
layer around fruit seed
pericarp- all the layers surrounding
mesocarp- the middle protective layer of fruit seed
epicarp- the outermost skin
Rocks in New York were found to be the same age and chemically identical to rocks found in Portugal. This discovery provides evidence for
A coastal erosion
B ocean currents
C glacial erosion
D plate tectonics
Answer:
D. plate tectonics
Explanation:
I picked that one and it was correct
Read the paragraph from the section "Pea Plants And The Punnett Square."
A pea plant could have one copy of the height gene that coded for "tall" and one copy of the height gene that coded for
"short." The tall allele is "dominant," and this means that it can mask the other allele. The short allele is called
"recessive." The allele combination of tall-short would result in a tall plant since the tall allele is dominant.
Which option is the BEST definition of the word "mask" as used in the paragraph above?
A pea plant could have one copy of the height gene that coded for “tall” and one copy of the height gene that coded for “short”. The tall allele is “dominant”, and this means that it can mask the other allele.
Answer:
Explanation:
Is a reflex part of the central
nervous system, the peripheral
nervous system, or both? Explain.
Answer:Because the peripheral nervous system transmit reflex impulses from sense organs to central nervous system and then back to the sense organs. So both the Central nervous system and the peripheral systems are involved.
To understand a bit better.....
One of our body parts consists of a nervous system it is a complex network of neurons and cells that carry pieces of information to and from the brain and spinal cord to various parts of the body.
So in conclusion...
Yes! The Central nervous system and the peripheral systems are involved!So therefore your question is correct!
Hope this helps!
-Tobie The Dog <3
(p.s a photo has been listed so you know what the nervous system is!)
Where do electrons go after they leave chlorophyll?
Answer:
They leave and find somewhere else to replace the previous electron that had left just like it did and repeats the same process over and over again.
Explanation:
This is what i found on the internet to further explain my response, "The electron lost from the chlorophyll a special pair is replenished by splitting water. The passing of the electron in the first part of the electron transport chain causes protons to be pumped from the stroma to the thylakoid lumen." "When light strikes chlorophyll (or an accessory pigment) within the chloroplast, it energizes electrons within that molecule. ... The excited electrons leave chlorophyll to participate in further reactions, leaving the chlorophyll “at a loss”; eventually they must be replaced."
I hope I helped :)
Would appreciate Brainliest ;)
I have two questions about dental impressions in forensics.
1. What kind of "print" is a bite mark? (latent, patent or plastic)
2. What did you consider when deciding what kind of "print" a bite mark is?
Answer:latent (i did not consider anything)
Why might it be hard to restore a wildlife population using custodial management?
The restoration of wildlife population under the custodial management is very hard because the wildlife animals are very dangerous to handle and they can harm the normal population.
What is the process of evolution?Evolution is the scientific theory that explains that "a change in the characteristics of biological populations over next generations. According to scientists RNA is the first existing molecule on earth that replicate by itself and the process of evolution lead to advanced forms of life.
The restoration of wildlife population under the custodial management is very hard because the wildlife animals are very dangerous to handle and they can harm the normal population.These characteristics are easily trasffered from one generation to other generation.
Therefore, The restoration of wildlife population under the custodial management is very hard because the wildlife animals are very dangerous to handle and they can harm the normal population.
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Explain the movement of ribs during inhalation and exhalation.
Answer:
Inspiration (breathing in)
The diaphragm contracts and moves downwards. The intercostal muscles contract and move the ribs upwards and outwards. This increases the size of the chest and decreases the air pressure inside it which sucks air into the lungs. During normal breathing, the major inspiratory muscles produce rib cage expansion and a downward movement of the diaphragm. These movements cause the pressure around and in the lung to become negative (relative to atmospheric pressure).
Explanation:
Explanation:
During normal breathing, contraction of the major inspiratory muscle, the diaphragm, produces both rib cage expansion and a downward movement of the diaphragm. These movements cause the pressure around and in the lung to become negative relative to atmosphere.
Question 5
What is the advantage of placing telescopes in space? Select the best answer from the choices below.
Oь
Space telescopes are stronger
Space telescopes are above the distortion of Earth's atmosphere, clouds, and light pollution
Only space telescopes can observe the most distant stars and galaxies
Space telescopes are closer to the objects scientists want to observe
Oc
Od
Answer:
I think its c, because that's the correct definition of a telescope. It is because if telescope weren't there, we wouldn't be able to view planets or skies in the world.
Explanation:
pls mark me brainliest
Which of the following explains how fault is formed?
a. Earthquakes shake the rocks to slide horizontally, vertically, or sideward.
b. Gravity pulls on the crust to slide up, down or past each other.
c. Different forces pushing or pulling on the crust causes rocks to slide horizontally, vertically, or sideward.
d. Same force pushing or pulling on the crust causes rocks to slide horizontally, vertically, or sideward.
Answer:
a. Earthquakes shake the rocks to slide horizontally, vertically, or side-ward.
Explanation:
The correct answer is - a.Earthquakes shake the rocks to slide horizontally, vertically, or side-ward.
Reason -
A fault is a fracture or zone of fractures between two blocks of rock.
Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake - or may occur slowly, in the form of creep.
During an earthquake, the rock on one side of the fault suddenly slips with respect to the other.
The fault surface can be horizontal or vertical or some arbitrary angle in between.
who is the scientist who discovered that traits pass from parents to offspring and that alleles interact with dominant and recessive properties
Answer: Mendel
Explanation:
Answer:
Gregor Mendel
Explanation:
Which of the following is not a stage in hurricane formation?
A)
Thunderstorms in a low-pressure area combined with the Earth’s rotation cause the storm’s initial rotation.
B)
Pollution in the atmosphere raises the temperature of the air, creating a depression.
C)
Warm, moist air rises from the sea and increases the storm’s energy.
D)
As water from the sea turns into water vapor, latent heat enters the storm, causing the storm’s energy to increase.
E)
As condensation (rain) occurs, latent heat is released, which warms the air and makes it lighter, causing the hurricane to increase in strength and intensity.
Answer:
B
Explanation:
Because if that was the case we would have hurricanes everyday
Answer this plsss
And correct the first if im wrong
One way asexual reproduction differs from sexual reproduction is that it requires only one
organisms and, thus, one set of genes. Which of the following would you expect in the genetic
material of sexually reproducing organisms? *
What type of rock will you find near the mouth of a river?
Answer:
I believe the answer is a sedimentary rock
