a scientist discovers a new species of fossil tetrapod. the fossil consists only of a few scattered hard parts. which trait would be most likely to allow the scientist to identify the unknown as a mammal?
Answers
The trait which most likely allow the scientist to identify the unknown as a mammal would be differentiated teeth.
Fossil, remnant, impression, or hint of an animal or plant of a beyond geologic age that has been preserved in Earth’s crust. The complex of facts recorded in fossils globally known as the fossil file—is the primary source of information about the history of the existence of the world.
Only a small fraction of historic organisms are preserved as fossils, and generally, best organisms that have a stable and resistant skeleton are conveniently preserved. most major businesses of invertebrate animals have a calcareous skeleton or shell (e.g., corals, mollusks, brachiopods, bryozoans). other kinds have shells of calcium phosphate (which additionally takes place in the bones of vertebrates), or silicon dioxide. A shell or bone that is buried fast after deposition may additionally preserve these natural tissues, though they become petrified (transformed to a stony substance) over the years.
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Related Questions
what will happen if there is no gravitational pull in earth
Answers
A lack of gravity would eventually take its toll on our very planet, writes Masters. "Earth itself would most likely break apart into chunks and float off into space." ... Without the force of gravity to hold it together, the intense pressures at its core would cause it to burst open in a titanic explosion.
In the absence of gravity, whatever thing we threw would fly away indefinitely.
What is gravity?the force that pulls a body towards the direction of the earth's center or any other mass-containing physical body. In other words, it is a characteristic of things, of matter. All matter is drawn to all other matter, to put it simply. The stronger the attraction between objects, the more matter there is, and the closer together the items are.
It is the gravitational attraction of all the material in the Sun, pulling it firmly together, that enables nuclear fusion to occur and provides us with heat and light. It was initially responsible for the development of the Solar System. Nevertheless, despite its pervasiveness, gravity is one of the Universe's most enigmatic forces. All objects with mass, including our Earth, really bend and curve spacetime, which is what causes gravity to pull you toward the ground. What you experience as gravity is that curvature.
Hence, We couldn't survive without gravity. It produces the force that keeps the Earth in orbit around the band that keeps us on the surface of the planet.
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In which trophic level do we find consumers?
Answers
Answer:
Beginning in level 2, and also anywhere above that
Explanation:
Find the solution of the given initial value problem: (a) y
′
−y=2xe
2x
,y(0)=1 (b) y
′
+(cotx)y=2cscx,y(π/2)=1
Answers
(A) The answer to the initial value problem is given by \(\(y = (x^2 + 1)e^x\)\), where \(\(y' - y = 2xe^{2x}\)\) and \(\(y(0) = 1\)\).
(B) The resolution to the initial value problem can be expressed as \(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\)\), where \(\(y' + \cot(x)y = 2\csc(x)\)\) and \(\(y\left(\frac{\pi}{2}\right) = 1\)\).
(A) To solve the initial value problem:
\(\[y' - y = 2xe^{2x}, \quad y(0) = 1\]\)
We can use an integrating factor method. To begin, let us express the equation in its standard form:
\(\[y' - y - 2xe^{2x} = 0\]\)
The integrating factor \(\(I(x)\)\) is given by \(\(I(x) = e^{\int -1 \, dx} = e^{-x}\)\).
To obtain the solution, apply the integrating factor to both sides of the equation and perform the multiplication.
\(\[e^{-x}(y' - y) - 2xe^{2x}e^{-x} = 0\]\)
This simplifies to:
\(\[e^{-x}y' - e^{-x}y - 2x = 0\]\)
Now, observe that the expression on the left-hand side represents the derivative of \(\((e^{-x}y)\)\) with respect to \(\(x\)\).
Using this observation, we can rewrite the equation as:
\(\[\frac{d}{dx}(e^{-x}y) - 2x = 0\]\)
Integrating both sides with respect to \(\(x\)\), we get:
\(\[e^{-x}y - \int 2x \, dx = C\]\)
where \(\(C\)\) is the constant of integration.
Integrating \(\(\int 2x \, dx\)\), we have:
\(\[e^{-x}y - x^2 + C = 0\]\)
To find the constant \(\(C\)\), we use the initial condition \(\(y(0) = 1\)\).
Substituting \(\(x = 0\)\) and \(\(y = 1\)\) into the equation, we get:
\(\[e^{0} \cdot 1 - 0^2 + C = 0\]\)
\(\[1 + C = 0\]\)
\(\[C = -1\]\)
Substituting \(\(C = -1\)\) back into the equation, we have:
\(\[e^{-x}y - x^2 - 1 = 0\]\)
Finally, we can solve for \(\(y\)\) by isolating it:
\(\[e^{-x}y = x^2 + 1\]\)
\(\[y = (x^2 + 1)e^x\]\)
(B) To solve the initial value problem:
\(\[y' + \cot(x)y = 2\csc(x), \quad y\left(\frac{\pi}{2}\right) = 1\]\)
We can use an integrating factor method. To begin, we will rewrite the equation in standard form:
\(\[y' + \cot(x)y - 2\csc(x) = 0\]\)
The integrating factor \(\(I(x)\)\) is given by:
\(\(I(x) = e^{\int \cot(x) \, dx} = e^{\ln(\sin(x))} = \sin(x)\).\)
Apply the integrating factor to both sides of the equation and perform the multiplication.
\(\[\sin(x)(y' + \cot(x)y) - 2\csc(x)\sin(x) = 0\]\)
This simplifies to:
\(\[\sin(x)y' + \cos(x)y - 2 = 0\]\)
Now, observe that the expression on the left-hand side represents the derivative of \(\((\sin(x)y)\)\) with respect to \(\(x\)\). Using this observation, we can rewrite the equation as:
\(\[\frac{d}{dx}(\sin(x)y) - 2 = 0\]\)
Integrating both sides with respect to \(\(x\)\), we get:
\(\[\sin(x)y -\)\(\int 2 \, dx = C\]\)
where \(\(C\)\) is the constant of integration. Integrating \(\(\int 2 \, dx\)\), we have:
\(\[\sin(x)y - 2x + C = 0\]\)
To find the constant \(\(C\)\), we use the initial condition \(\(y\left(\frac{\pi}{2}\right) = 1\).\)
Substituting \(\(x = \frac{\pi}{2}\)\) and \(\(y = 1\)\) into the equation, we get:
\(\[\sin\left(\frac{\pi}{2}\right) \cdot 1 - 2\left(\frac{\pi}{2}\right) + C = 0\]\)
\(\[1 - \pi + C = 0\]\)
\(\[C = \pi - 1\]\)
Substituting \(\(C = \pi - 1\)\) back into the equation, we have:
\(\[\sin(x)y - 2x + (\pi - 1) = 0\]\)
Finally, we can solve for \(\(y\)\) by isolating it:
\(\[\sin(x)y = 2x - (\pi - 1)\]\)
\(\[y = \frac{2x - (\pi - 1)}{\sin(x)}\]\)
\(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\).\)
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The complete question is:
Find The Solution Of The Given Initial Value Problem:
(A) \(\(y' - y = 2xe^{2x}\)\), and \(\(y(0) = 1\)\)
(B) \(\(y' + \cot(x)y = 2\csc(x)\)\), and \(\(y\left(\frac{\pi}{2}\right) = 1\)\)
Which of the following would be used to test for acidity in a soil sample?
O pH test
O Sieve shaker
O Florescence diacetate test
OX-ray diffraction
Answers
The pH test would be used to test for acidity in a soil sample (option A).
What is pH?pH is the notation that expresses the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.
Acidity of a solution refers to the state of being an acid. Using the pH scale, an acidic solution or substance will have a pH between 0 - 6.9.
pH is equal to −log {C}, where c is the hydrogen ion concentration.
Therefore, the pH test can be used to evaluate whether a soil sample is acidic.
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Answer:
The pH test would be used to test for acidity in a soil sample (option A).
Explanation:
What is pH?pH is the notation that expresses the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline. Acidity of a solution refers to the state of being an acid. Using the pH scale, an acidic solution or substance will have a pH between 0 - 6.9. pH is equal to −log {C}, where c is the hydrogen ion concentration. Therefore, the pH test can be used to evaluate whether a soil sample is acidic.
How do cells receive external signals, such as growth factors, which result in cells "knowing" when to divide?.
Answers
The cell cycle is the process by which cells divide and multiply. It is made up of two major stages: interphase and mitosis. The interphase is divided into three phases: G1, S, and G2. The DNA replicates during the S phase of the interphase, which is followed by the mitosis phase. The cell cycle is controlled by signals that regulate cell division.
How do cells receive external signals, such as growth factors, which result in cells "knowing" when to divide? Growth factors are external signals that cells use to regulate cell growth and division. Growth factors are proteins that are secreted by cells to stimulate growth and division. Growth factors attach to receptors on the surface of cells, causing a series of events inside the cell that ultimately result in cell division. The growth factors that control cell division are called mitogens.
Mitogens are responsible for stimulating cells to enter the cell cycle, and they do so by binding to specific receptors on the surface of the cell. This causes a cascade of signaling events within the cell, ultimately leading to the activation of key cell cycle proteins that drive cell division. Hence, the growth factors attach to receptors on the surface of the cells which ultimately results in cell division.
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consider the element sodium its atomic number is
Answers
Answer: 11
Explanation:
The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23. We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11
Due to the intense heat and pressure on the inner core, scientists believe it is a (4 points) solid liquid semi-fluid gas
Answers
Answer:
Liquid
Explanation:
a lens that is thinner in the center and thicker at the edge is
Answers
A lens that is thinner in the center and thicker at the edge is called a concave lens. It is also called a diverging lens, and its focal length is negative.
This lens is diverging as it causes light rays to spread apart as they pass through it. The thinner center and thicker edges of a concave lens causes the light rays to refract or bend outwards. The light rays diverge as they exit the lens and form virtual images that are always smaller than the object.
This type of lens has numerous applications, including in medical imaging equipment, telescope, and cameras. It is particularly useful for people with nearsightedness, as it helps them see objects that are far away in sharp focus. The concave lens is often used as a magnifying lens in magnifying glasses and in the viewfinders of cameras.
Thus, a concave lens is an optical device that is thinner in the center and thicker at the edge. It diverges light rays passing through it, causing them to spread out and form virtual images that are smaller than the object.
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Why do you think scientists call both liquids and gases by the same term-fluids?
Answers
Featured snippet from the web
A gas fills its container, taking both the shape and the volume of the container. Liquids and gases are called fluids because they can be made to flow, or move. In any fluid, the molecules themselves are in constant, random motion, colliding with each other and with the walls of any container.
If Pete used angular “sediments” would that increase or decrease the porosity? Explain why in 1 -
2 complete sentences with good grammar? (5 pts)
Answers
If angular sediments are used, the porosity will decrease because they are more tightly packed together.
What is porosity?The term porosity has to do with the ability of soil to allow water to pass through it. The more sparse the soil particles are, the more likely that it will be porous.
Hence, if angular sediments are used, the porosity will decrease because they are more tightly packed together.
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If the number of frogs decreases which population will most likely increase
Answers
Answer:
flies because frogs eat flies
Explanation:
Answer:
Insects, Flies, dragon flies
I hoped this helped, but you didn't give me the answer choices.
Biology: For the following fill in the blank questions choose from the following words. Each word may only be used once or not at all: photosynthesis, cellular respiration, abiotic, biotic, primary succession, secondary succession, climax communities, pioneer species, biodiversity, and sustainable.
4. The process by which autotrophs use energy from sunlight to build carbohydrates is called ____________________.
Answers
Answer:
photosynthesis
Explanation:
Each cell runs on the chemical energy found mainly in carbohydrate molecules (food), and the majority of these molecules are produced by one process: photosynthesis. Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules.
Which of these observations fails to support the endosymbiotic theory for the origin of eukaryotic cells?
A)The existence of structural and molecular differences between the plasma membranes of prokaryotes and
the internal membranes of mitochondria and chloroplasts
B)The existence of size differences between the cytosolic ribosomes of eukaryotes and the ribosomes within
mitochondria and chloroplasts
C) the existence of size differences between some prokaryotic cells and mitochondria
D) the existence of rRNA sequence differences between the cytosolic ribosomes of eukaryotes and the
ribosomes within mitochondria and chloroplasts
Answers
The observation that fails to support the endosymbiotic theory for the origin of eukaryotic cells is: C) the existence of size differences between some prokaryotic cells and mitochondria.
The endosymbiotic theory is a scientific theory that explains the origin of eukaryotic cells from prokaryotic cells. According to this theory, eukaryotic cells evolved from prokaryotic cells that formed a symbiotic relationship with one another, with one cell living inside the other. The larger cell provided the smaller cell with protection and nutrients, while the smaller cell provided the larger cell with energy through the process of photosynthesis or cellular respiration.Mitochondria and chloroplasts, two organelles found in eukaryotic cells, are believed to have evolved from free-living prokaryotes that were taken up by other cells through endocytosis.
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Which of the following is a testable hypothesis?
Answers
Cricketers chirp faster when the night is warmer is a testable hypothesis.
What is testable hypothesis?A hypothesis is a theory that attempts to explain or forecast the relationship between two or more variables.
A testable hypothesis is one that can be proven or refuted through experiments, data collection, or personal experience.
A tested hypothesis requires a relationship statement between two or more variables. All of the following terms should be included: "more than," "less than," "greater than," "different from," and "related to." It also needs to be justifiable and consistent with previous research findings.
Thus, we can conclude that option C is correct.
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What does the theory of plate tectonics state about the earth?
A. The inner core is divided into plates that glide under the mantle.
B. The inner core is made up of a mantle that is covered by plates.
C. The outer shell is divided into plates that glide over the mantle.
D. The outer shell is made up of a mantle that sits on top of plates.
Answers
Answer:
A & B are wrong so it's either C or D and I chose C
Explanation:
Because the theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.
Which of the following is composed of more dense tissue?
Select one:
O a. Epidermis
O b. Hypodermis
c. Dermis
Answers
Which phenotypic probability below is written correctly?
A.) 9/16 Round & Yellow Seed; 3/16 Round & Green Seed; 3/16 Wrinkled & Yellow Seed; 1/16 Wrinkled & Green Seed
B.) 4/16 Yellow Seed & Inflated; 8/16 Yellow Seed & Constricted; 4/16 Green Seed & Inflated; 8/16 Green Seed & Constricted
C.) 8/16 Yellow Seed & Inflated; 8/16 Yellow Seed & Constricted; 4/16 Green Seed & Inflated; 8/16 Green Seed & Constricted
Use the screenshot to answer this question.
Which letter choice is correct?
Answers
Because they eliminate microorganisms and aid to improve your system, antibiotics are the biotechnology I've picked.
How does biotechnology work?The use of biology to create novel products, processes, and creatures with the goal of enhancing societal and human health is known as biotechnology. Since the domestication of plants and animals as well as the discovery of antibiotics , biotechnology—often abbreviated as “biotech”—has been a part of human culture.
Medical (red), agricultural (green), industrial (white), marine (blue), food (green), industrial (red), and environmental biotechnology are the main subfields of biotechnology.
Biotechnology, which combines biology and technology, has a wide range of applications in a variety of fields, including agriculture, cell biology, plant physiology, virology, immunology, and antibiotics .
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If x is a set and the set contains the real number between 1 and 2, then the set is
Answers
If x is a set containing the real numbers between 1 and 2, then the set is a closed interval, denoted as [1,2].
The square brackets indicate that the interval includes the endpoints 1 and 2, and the interval is closed because it contains all of its limit points. In other words, any sequence of numbers that converges within the interval [1,2] will also converge to a point within that interval. So, to summarize, if x is a set containing the real numbers between 1 and 2, then the set is the closed interval [1,2]. If x is a set containing real numbers between 1 and 2, then the set is an interval on the real number line. Specifically, x is an open interval, denoted as (1, 2). The open interval includes all real numbers between 1 and 2, but excludes the endpoints 1 and 2 themselves. This set is infinite, as there are infinitely many real numbers within this range.
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What is the term for a female reproductive cell?
sperm
egg
tetrad
embryo
Answers
Answer:
Second choice; egg
Explanation:
Gametes are an organism's reproductive cells.
- Female gametes are called ova or egg cells
- Male gametes are called sperm
A tetrad consists of four chromatids, and a chromatid is one half of a duplicated chromosome.
An embryo is an unborn offspring (child) developing.
Answer:
Egg
Explanation:
The egg also known as ovum is the female reproductive cell.
Would you expect a 4 bp strand or a 200 bp strand to travel faster in the capillary tube? Why??
Answers
The 4 bp strand would be expected to travel faster in the capillary tube compared to the 200 bp strand.
In capillary electrophoresis, charged molecules are separated based on their size and charge as they migrate through a narrow capillary tube under the influence of an electric field. The velocity of migration of the molecule is determined by its size and charge, and smaller molecules migrate faster than larger ones.
Therefore, the 4 bp strand, being much smaller in size than the 200 bp strand, would travel faster in the capillary tube. The separation between the two strands would be greater with the smaller molecule as they migrate at a faster rate. This would result in better resolution and a clearer separation of the two strands.
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The organism in the photo is a daphnia, or water flea. Daphnia are tiny aquatic organisms that live in most freshwater habitats. Adults range from less than 1 to 5 mm in length. They are good swimmers and eat mostly algae. Daphnia become mature at 5 to 10 days, and an adult female can produce up to 100 eggs every 3 or 4 days during its 2-month life span. When harmful algae rapidly increase in the daphnia environment, daphnia can develop adaptations to tolerate the negative effects of the algae within 10 years. What characteristic of the daphnia allows the population to adapt to environmental change
Answers
Answer:
The characteristic of daphnia which allows the population to adapt to the environmental change is the short generation time.
Explanation:
As evident from the text, the maturity comes in 5 to 10 days and they reproduce for the next 2 months at a rate of 100 eggs every 3/4 days. This is a short generation time which makes the evolutionary changes easy and less time-consuming to incorporate.
If we are in a pool submerged in water and someone shouts from outside, do we hear the sound? What happens on your tour? What phenomenon occurs?
Answers
HELP FAST PLEASE!
In 1995, wolves were reintroduced in Yellowstone National Park, causing a trophic cascade. Which statement best describes an impact that the reintroduction of wolves had on the ecosystem?
Question 15 options:
Elk populations were restored to their highest levels in over 100 years
The wolves outcompeted all the other carnivores for food and resources
Biodiversity steadily decreased in the area because the wolves hunted most of the primary consumers
Elk could no longer overgraze the vegetation and habitat that was needed by other species
Answers
Which statement best describes reproduction with two parents?
A. Smaller yeast cells grow on the side of a larger yeast cell.
B. New African violet plants can grow from leaves cut off of existing
plants.
C. Many tadpoles hatch from a cluster of eggs fertilized by cells from
a male frog.
O
D. Small sea stars can grow from arms that break off of a large sea
star.
Answers
eggs have to be fertilized by two parents
Which of the following options have the same value as 20% of 45?
Choose 3 answers:
20
. 100
45
1
5
45
20.45
20
100
45
0.2.45
Answers
Answer:
0.2.45,,,20.45,5
Explanation:
getting 20 percent of 45 can be expressed in different ways giving different values
What type of scientist would be the best qualified to perform genetic engineering to pro- duce seed that are more productive in agriculture? A. biochemist B. geologist C. molecular biologist D. paleontologist
Answers
The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.
Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.
Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.
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which organism causes gastroenteritis and is possibly transmitted through the respiratory route in addition to the fecal-roal route
Answers
Answer:
Noroviruses
Explanation:
A strand of mRNA has the bases cytosine-cytosine-uracil. Which amino acid corresponds to these bases?
A. leu
B. pro
C. ser
D. phe
Answers
Hope this helps you :))
What other organisms can you think of that are similar to mules and seedless watermelon? What benefits to these organisms can you think of?
Answers
Answer: Neither can reproduce! (They are both hybrids—a mule is a cross between a female horse [mare] and a male donkey [jack]—and neither can reproduce.The flesh of the fruit (and the rind for that matter) is also nutritious, so both seeded and seedless still have significant health benefits.
Explanation:
What is their role in the Antartic ecosystem
(Learpard seals)
HELP ME!!
Answers
Answer:
Explanation:
Leopard seals use their powerful jaws and long teeth to kill smaller seals, fish, and squid. These effective predators live in frigid Antarctic and sub-Antarctic waters, where they also eat penguins. They often wait underwater near an ice shelf and snare the birds just as they enter the water after jumping off the ice.