The theory for the evolution of the vertebrate jaw was that the jaw came through the simple transformation of a ancestral rostral gill arch.
What is a vertebrate?A vertebrate simply means an organism that has a spine or backbone. Examples include mammals, reptiles, etc.
In this case, the theory for the evolution of the vertebrate jaw was that the jaw came through the simple transformation of a ancestral rostral gill arch.
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What are the defining characteristics of reptiles?
Reptiles are a group of vertebrate animals in the Reptilia class.
What are reptiles?
They are animals in the Reptilia class. Their main characteristics include:
They have backbones.Their body temperature varies with that of the environment.Their bodies are covered with scales.Fertilization is internal and reproduction is by laying eggs or giving birth to live ones.More on reptiles can be found here: https://brainly.com/question/15147975
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Which muscle fiber contracts slowly and is usually red due to the amount of blood vessels delivering oxygen to the muscle?.
Due to their immense oxygen needs, slow-twitch fibers are associated with many blood vessels, mitochondria, and increased concentrations of myoglobin, an oxygen-binding protein in the blood that provides muscles their reddish coloring.
A variety of mice can have either gray fur (G) or white fur (g). Which words
describe the genotype of a mouse that inherits two of the alleles for gray fur?
O
A. Heterozygous gray
B. Heterozygous recessive
OC. Homozygous dominant
O D. Homozygous white
Answer:
[tex]\huge\boxed{\sf C. \ Homozygous\ dominant}[/tex]
Explanation:
Key:Since the dominant trait is denoted by a capital letter, gray is a dominant trait denoted by G.Recessive trait: White fur denoted by g.The mouse inherits two of the alleles for gray fur i.e. GG.
GG is gray (dominant trait) and GG is having the identical alleles so it will be called homozygous dominant.
[tex]\rule[225]{225}{2}[/tex]
Which of the following factors would be LEAST likely to have an impact on the carrying capacity of an ecosystem?
OA. The amount of food available.
OB. The age of the habitat.
C. The number of nesting sites.
OD. Diseases existing in the habitat.
O E. The number of predators.
I need the answers asap ASAP ASAP please
what are the components of the PNS ?
The components of the Peripheral nervous system consists of nerves, ganglia and nerve endings.
What is the function of peripheral nervous system?The peripheral nervous system is one of the divisions of the central nervous system. Its function is to transmit information from it to other organs and specific parts of the body. Function is carried out through the nerves and nerve ganglia.
In this case, we can say that The Peripheral Nervous System is formed by nerves and ganglia and its function is to bring information to the Central Nervous System and responses to Organs effector organs.
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For fruits/vegetables, why do some sugars exist in simple forms and some sugars in complex forms?
Simple sugars are a type of carbohydrate. Carbohydrates are one of the three basic macronutrients — the other two being protein and fat.
Simple sugars are found naturally in fruits and milk, or they can be produced commercially and added to foods to sweeten, prevent spoilage, or improve structure and texture.
Monosaccharides are the simplest carbs, in that your body cannot break them down further.
This allows your body to absorb them quickly and easily, with the exception of fructose.
There are three types of monosaccharides (1Trusted Source):
Glucose: Fruits and vegetables are natural sources of glucose. It’s also commonly found in syrups, candy, honey, sports drinks, and desserts.
Fructose: The primary natural dietary source of fructose is fruit, which is why fructose is commonly referred to as fruit sugar.
Galactose: The main dietary source of galactose is lactose, the sugar in milk and milk products, such as cheese, butter, and yogurt.
how does catfish compare to the 4 groups of plants?
What is municipal waste?
Municipal waste is the waste generated by _____
and commercial enterprises, such as markets and hotels. An example of
municipal waste is _____
Answer: Municipal waste is the waste generated by (households)
An example of municipal waste is (street sweepings)
Explanation:I took the test on edmentum
Municipal waste refers to the waste that is generated by households, institutions, and commercial establishments within a municipality or a local area.
What is municipal waste?It includes various types of waste produced in everyday activities, such as residential households, schools, offices, restaurants, hospitals, and retail businesses.
Examples of municipal waste include household garbage, food waste, packaging materials, paper, cardboard, plastics, glass, metals, yard waste, and other similar waste materials generated by individuals and businesses within a community. Municipal waste does not include industrial or hazardous waste, which are subject to separate regulations and disposal methods.
The management of municipal waste typically involves collection, transportation, and disposal or treatment of the waste to minimize its environmental impact and promote sustainable waste management practices, such as recycling, composting, and waste-to-energy conversion.
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Which of the following caused the mortality rates to significantly decrease starting in the 17th century
Answer:
The significant decrease in mortality rates starting in the 17th century is due improved Hygiene, sanitation, healthcare.
Explanation:
how is ""maximum"" tension achieved in a whole muscle (assuming optimal length)?
The maximum tension achieved in a whole muscle by stretching a muscle to its optimum length.
What is maximum tension of a muscle?The maximum tension of a muscle is the maximum force that a muscle can generate when contacting.
The maximum tension equates to the maximum work that a contracting muscle can do.
The maximum tension achieved in a whole muscle by stretching a muscle to its optimum length where actin–myosin interactions are maximal.
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The portion of the dna double helix requiring the least energy input to form the bond is the.
Backward (opposite of its normal direction) flow of a body fluid is _______.
The backward (opposite of its normal direction) flow of a body fluid is called reflux.
What is reflux?Reflux refers to the opposite movement of a body fluid during physiological functions.
For example, acid reflux refers to the burning sensation due to the movement of stomach acid to the throat.
In conclusion, the backward (opposite of its normal direction) flow of a body fluid is called reflux.
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Which thermoregulation strategy helped the hummingbird decrease its body
temperature?
a. flying
b. eating
c. basking in the sun
d. resting in the shade
submit
The thermoregulation strategy helped the hummingbird decrease its body
temperature is resting in the shade. Thus, option "D" is correct.
What is Thermoregulation?Thermoregulation itself is actually a branch of homeostasis. Homeostasis is defined as the internal regulation of body environment which includes the vital organs of the body such as the heart, liver, brain and contraction of skeletal muscles.
Thus, option "D" is correct.
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How did the Lumber industry contribute to the pollution in Sudbury (Located in Canada)
As of now Sudbury has some of the cleanest air in all of Ontario. That’s hard to believe given the city once emitted 2.5 million tonnes of sulfur dioxide per year due to the Lumber industry. In the 1980s, the “Sudbury” became known as a unit of pollution, against which other industrial cities were measured. It’s now become known as a unit of restoration.
The Atlantic puffin feeds on several species of Atlantic fish. A population of puffins living on Matinucus Rock was found to feed on the types of fish shown in the graph below. The beaks of this group of puffin are shaped to grasp Species A particularly well. Predict what would happen to the puffins’ beaks if another predator enters the area that is better at preying on Species A. Explain your reasoning based on what you know regarding genetic adaptations.
Answer:
The Puffins would have to find more food sources and the beaks would change accordingly to the food source they are going after.
Describe the structure of amino acids, and explain how their sequence in proteins affects the proteins' shapes. What are the essential amino acids (definition and a list)
Answer:
the sequence of anemia of a protein determine eyes protein shape since the chemical properties of each animal acids are force that give rise to enter mosquicular interactions to begin to create a can be success and be stands
Explanation:
your body need 20 different kinds of animal assist to fun to formation correctly this 20 enemy as his combined in different ways to make protisanum your body your body makes hundreds of anemies but it can make 9 of animal assess you need these are called entitional and acid
Climate has changed over geologic time. How does this map provide evidence to support this claim?
Large sources of fossil fuels are found in cold regions shows evidence of climate change.
What this map shows?This map shows that large sources of fossil fuels are found in cold regions because fossil fuels are extracted from the living organisms body so in cold regions once there was a large number of organisms lived there. When they died the fossil fuel sources are formed.
So we can conclude that large sources of fossil fuels are found in cold regions shows evidence of climate change.
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HELP ASAP!!
Why is water considered a renewable natural resource?
because only surface water can be used for human purposes
because once we use up a source of freshwater it is gone forever
because the amount of freshwater is unlimited and should be used freely
because water is continuously cycled from land to the atmosphere and back
because water is continuously cycled from land to the atmosphere and back
Explanation:
With careful management and responsible usage, water is a renewable resource.
What adaptation
did lobe-
finned fish have that was
different than the previous
organisms?
A. lobes that were the beginnings of arms and legs
B. jaws that helped with catching prey
C. giving birth to live young
D. brain and vertical column
Activate Wi
Go to Settings
Answer: A
Explanation:
Lobes were the beginning of arms and legs, the correct option is A.
What are lobe-finned fish?Lobe-finned fish, unlike other fish, have a core protuberance in their fins that contains many bones and muscles.
The fins are extremely flexible and may be useful for supporting the body on land, as seen in lungfish and tetrapods.
The majority of bony fish have ray fins. These thin fins are made up of skin webs that cover flexible spines. Lobe-finned fish, on the other hand, have fins that look like stumps.
The lobe-finned fishes are the ray-finned fishes' sister group. They are distinguished by paired, fleshy pectoral and pelvic fins espoused by a single bone.
Prehistoric records clearly show that terrestrial vertebrates evolved nearly 400 million years ago from lobe-finned fishes.
Thus, the correct option is A.
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The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes ________ speciation. Group of answer choices sympatric
Answer:
allopatric speciation.
Explanation:
How is the rough ER different
from the smooth ER?
A. The rough ER has visible ribosomes.
B. The rough ER has visible chromosomes.
C. The rough ER has a visible nucleotide.
What do you observe in the North American Deciduous Forests ?
Answer:
broad-leafed trees that shed their leaves annually
Explanation:
npsgov
ANYONE?
A 21 year old woman has increasing severe pain in her left leg. She had an undisplaced fracture of the midshaft of her left tibia 2 days ago which was treated conservatively with a plaster cast.
Her toes are warm and pulses are present.
Which is the most important immediate action?
1. Elevate the limb
2.Refer to orthopaedics
3. Remove the plaster cast
4.Replace the cast with increased padding
5. Re-X-ray the fracture site
C. Remove the plaster cast
Which of the following questions could best be explored using a scientific investigation?
An empirical scientific question is one that focuses on things, creatures, or occurrences in our immediate environment. By examining quantifiable data and supporting evidence, it can be resolved by experimentation, observation, or other data collection methods.
These questions are appropriate scientific questions and can be tested using the scientific method:
a) The color of Handragea flowers can be studied by growing it in different soils with different pH values and the result can be noted.
b) The properties of soil affecting color of flowers can be studied by growing the flowers in different types of soils like clay, sand, nutrient rich, nutrient deficient, silt, etc.
e) If the grass requires fertilizer one set of grass can be grown without fertilizer while one set can be grown with fertilizer to check the query.
There are limitations to the scientific process. Only quantitative data from observable, quantifiable, and repeatable experiments can it provide objective answers to questions. It is unable to respond to introspective queries based on qualitative judgments or beliefs hence, other options will be incorrect.
Hence, The following questions are considered appropriate scientific questions that can be tested using the scientific method.
a. Does the pH of the soil affect the color of hydrangea flowers?
b. What properties of the soil influence the color of hydrangea flowers?
e. Does grass require fertilizer in order to grow?
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Answer:
The answer is how many seeds are in an apple
Explanation:
Review 2
A Write True or False for each statement.
1. Red blood cells have no nucleus.
2. While blood cells contain hemoglobin.
3. Amoebas are smaller than bacteria.
4. Plants and animals are multicellular.
5. Cells require water to divide..
6. Water moves across cell membranes by osmosis.
7. White blood cells destroy invading bacteria.
8. Cells that work together are called tissues.
What invention in the 1400’s revolutionized the way knowledge could be spread?
Movable-type printing was the invention in the 1400’s revolutionized the way knowledge could be spread.
What is Movable-type printing?
This type of printing involves the use of movable components to reproduce elements and letters on paper.
This was adopted by churches through printing of bible and other religious materials and led to the protestant reformation in the 1400s
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Stones caused by the precipitation of minerals, such as calcium, and other substances from the urine or kidney filtrate are ________________.
Kidney stones are stones caused by the precipitation of minerals, such as calcium, and other substances from the urine or kidney filtrate.
What are Kidney stones?
These are hard deposits of minerals such as calcium etc which stick together in the urine of affected individuals.
This thereby causes pain when urine is being expelled from the body as a result of the large size.
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1. do you think erythropoietin levels in athletes at low altitude are lower, higher, or the same after training at a high altitude for 2 months?
2. calculate the average ml of oxygen molecules in 100 ml blood in the athletes at low altitude and then in athletes in high altitude while training at high altitude. use the following information: 1.39 ml of oxygen per gram of hemoglobin.
3. do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.
results
table: effect of altitude on hct and hb
low altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 52 21 40 14.5
subject 2 49 20 41 14.4
subject 3 48 21 44 14.6
average 4 50 21 42 14.5
high altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 49 22 45 17.4
subject 2 50 22 44 17.3
subject 3 50 22 44 17.3
subject 4 50 22 44 17.3
1. Erythropoietin will be higher at low altitude. Erythropoietin or EPO level will be higher because of the raised blood oxygen training but its lasting period will depend on the training content as here it is only 2 months.
About high erythropoietin:
Among the objectives of altitude training is to improve athletes' sea-level endurance performance by raising blood oxygen carrying capacity. The attainment of improved haematological variables is mostly due to the augmented erythropoietin (EPO) production in hypoxia. The duration of exposure and degree of hypoxia affect the level of the erythropoietin EPO rise and the rate of erythropoiesis acceleration. The haematological response to altitude training may also be influenced by a wide range of additional factors.
2. 100 ml of blood contain 27.8 mL of oxygen. This can be said as it has been shown that a healthy person typically possesses 20 grammes of haemoglobin in every 100 millilitres of blood.
Procedure:
=20∗1.39
=27.8mL
Amount of oxygen found in 11 grams of hemoglobin is equal to 1.39 milliliters of oxygen.
Thus, the total amount of oxygen in milliliters would be equal to product of total weight of hemoglobin and the total amount of oxygen in ml in one gram of hemoglobin.
3. Athletes training at high altitude have more oxygen molecules. They have an advantage as a result of having more red blood
Why so:
Higher elevations have thinner air, which has less oxygen molecules per volume of air. The body therefore makes more red blood cells when athletes workout at these high elevations. For up to 20 days, these additional blood cells remain in the body. Also as a result of having more red blood cells, their blood can carry more oxygen. When they compete at lower elevations, their muscles naturally get a boost from more oxygen.
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If placed on the icr plan, do you want to repay your direct loans jointly with your spouse?.
No. Married borrowers are no longer permitted by law to combine their loans into a single joint consolidation loan. You must submit separate applications if you and your spouse both want to repay your loans using an income-driven repayment plan.
What is ICRR plan?
ICRRS is the name of a system that evaluates a customer's financial situation, including their liquidity, cash flow, profitability, debt profile, market indicators, industry and operational background, management skills, and other indicators, to determine whether they can repay a loan.
Your spouse's income is only taken into account under the ICR plan if you jointly filed your tax return.
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Are data that do not support a hypothesis useful?
A. No, because the data must be inaccurate
B. No, because the data show that the experiment failed
C. Yes, because the data prove that the experiment was designed
poorly
D. Yes, because the data provide useful information that can lead to
more testing
Answer:
D
really dude, just read these types of questions the one that's really different is usually right
