Answer:
Convection currents in the mantle
Explanation:
Convection in the mantle is the same as convection in a pot of water on a stove. Convection currents within Earth's mantle form as material near the core heats up. As the core heats the bottom layer of mantle material, particles move more rapidly, decreasing its density and causing it to rise.
Effects
Convection also plays a role in the movement of deep ocean waters and contributes to oceanic currents. Inside Earth, the convection of mantle material is thought to cause the movement of the overriding crustal plates, resulting in events such as earthquakes and volcanic eruptions.
Speed
Estimates of the speed with which Earth's mantle moves range from 1 to 20 cm/year with an average of about 5 cm/year in the case of plate motions to as much as 50 cm/year in hotspots such as the Hawaiian Islands (see Plates, Plumes, And Paradigms (2005) edited by Gillian R.
Direction
Convection currents observed in water rise to the surface and then spread out in both direction. Convection currents in the mantle are thought to operate in the same matter as convection currents in water. ... This shows that the convections currents move outward both right and left after the current reaches the surface.
Heat source
The primary sources of thermal energy for mantle convection are three: (1) internal heating due to the decay of the radioactive isotopes of uranium, thorium, and potassium; (2) the long-term secular cooling of the earth; and (3) heat from the core.
Answer:
A solid core inside the planet.
Explanation:
Suppose that two distantly related species live in similar environments and share a distinctive characteristic that facilitates survival in their environment but is not found in their immediate ancestors. Based on this information, this distinctive feature most likely represents a character that spread from:______.
a. one species to the other by gene flow.
b. an analogous character.
c. a homologous character.
d. a character that arose by genetic drift.
Based on this information, this distinctive feature most likely represents a character that spread from an ANALOGOUS character. They are present in unrelated species.
What are analogies in evolution?An analogy is a structure observed in unrelated species that emerged as a consequence of adaptation to similar environmental conditions.
Analogous structures often exhibit the same function but they do not have a common evolutionary origin.
Conversely, homo-logies are structures that may or may not have the same function but they are present in a common ancestor.
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Which of the following is not true about Darwin’s book On the Origin of Species? a. He worked on the manuscript for three years. B. It was successful. C. It explained his theory of evolution. D. It was based on his findings in South Africa. Please select the best answer from the choices provided A B C D.
Answer: the other person is correct!!
Explanation:
it is D, took the test, edge 2022
Identify an invasive species in your local ecosystem. Discuss how the species adapted to its native environment, including the types of adaptations and adaptive techniques.
Answer:
i live near the Gulf of Mexico so the loin fish would be considered an invasive species but you can go.ogle invasive species in the state that u are in and a lot would pull up to tell u
Explanation:
Invasive species when introduced compete with the native species present in the environment for food and space. One such example of invasive species is Invasive carp.
What is adaptation?Adaptations are the changes in an organism which help them in adjusting more in an ecosystem. Adaptations can be of different types such as structural, physiological, etc depending upon the environment.
When a highly invasive species is introduced, they are more likely to compete with the native species present in the environment. When the population sizes and genetic diversity of native species are large enough, the native species may be able to evolve traits which allow them to co-occur with the invasive species and live in the same ecosystem.
One examples of invasive species is the Invasive carp, which are fast-growing, aggressive, and adaptable fishes that outcompetes the native fish species present in the waterbody for food and habitat in much of the mid-section of the United States.
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Three organisms that are carnivores
Answer:
vultures
fox
plants
hope I'm right
What are the differences between Eukaryotic and Prokaryotic cells?
Answer:
The main difference between the two is that eukaryotic cells have a nucleus, while prokaryotic cells lack a nucleus.
The binding of oxygen to hemoglobin differs from the oxygen binding behavior of myoglobin because
The binding of oxygen to hemoglobin differs from the oxygen binding behaviour of myoglobin because oxygen binding to hemoglobin is cooperative.
Hemoglobin - oxygen bindingHemoglobin is the oxygen carrying protein of the blood that is located at the red blood cells. They have high affinity for oxygen.
Myoglobin is found in the muscle cells and they are contain haem proteins which they used to transport and store oxygen in the muscles.
Hemoglobin and myoglobin are two types of globin proteins that serve as oxygen-binding proteins, but binding of oxygen to hemoglobin differs from the oxygen binding behaviour of myoglobin.
This is because binding of oxygen by hemoglobin is cooperative. This means that as hemoglobin binds successive oxygens, the oxygen affinity of the subunits increases. This is opposite for myoglobin.
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1. What is a mutation?
Answer: A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene
Explanation:
what have more thermal energy?a bathtub at room temperature or a bathtub at 100° F ?
Answer:
Suppose you were to compare a milliliter of water near the boiling point with a bathtub full of water at room temperature. The bathtub contains a billion times as many water molecules, and therefore has a higher total kinetic energy and more heat.
Explanation:
A bathtub at 100°F has more thermal energy than a bathtub at room temperature.
Thermal energy is the energy that an object possesses due to the motion of its particles (atoms and molecules). The higher the temperature of an object, the more kinetic energy its particles have, resulting in greater thermal energy.
In this scenario, comparing a bathtub at room temperature (which is typically around 68-72°F) to a bathtub at 100°F, the bathtub with water at 100°F has higher thermal energy. The reason is that the water molecules in the warmer bathtub are moving more rapidly than in the cooler one. They have greater kinetic energy and are vibrating more vigorously, contributing to a higher thermal energy content.
Even though the absolute temperature difference might not seem large (32°F), the increase in thermal energy is significant due to the exponential relationship between temperature and kinetic energy. As the temperature rises, the molecules' energy increases exponentially, resulting in a notable difference in thermal energy.
In conclusion, the bathtub with water at 100°F has more thermal energy compared to the bathtub at room temperature due to the higher kinetic energy and faster motion of water molecules at the higher temperature. This concept underscores the connection between temperature and thermal energy in understanding the behavior of matter.
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Which is an example of the Earth's spheres interacting?
SELECT ALL THAT APPLY!
Answer:
All the spheres interact with others spheres. for example , rain(hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and riviers that provide drinking water fore wildlife and humans as well as water for plant growth
help lol
the options (for all) are
radiation
convection
conduction
Which element is essential to making up all organic molecules?.
Answer:
This element is carbon.
Explanation:
You might be quick to think the answer is something like hydrogen and oxygen because both form to make water. But understand that the question is not asking about important elements in life, just which element makes up organic molecules. This element happens to be carbon.
It's important to understand that carbon is lucky in that it has 4 valence electrons and is able to bond with other important elements, like F, N, and especially H. The bond between C-H is essential in organic chemistry because it represents the structure of an organic molecule and helps with the IUPAC naming of organic molecules. It also suffices to say that there is a cycle for carbon in the carbon cycle, which transports carbon from one place in our world to the other.
So, it suffices to say that carbon is in fact essential for making up organic molecules.
which factor is most likely to have contributed to the high fertility rate in africa
A lack of access to food
B Many economic opportunities
C high rate of education
D poor access to medical care
2. What is the relationship between dissolved oxygen (D.O.) and
temperature?*
O As the water temperature increases, the D.O. increases.
,
As the water temperature increases, the D.O. decreases.
As the water temperature decreases, the D.O. decreases.
As the water temperature increases, the D.O. stays the same.
Answer: as water temperature increases, D.O decreases
Explanation:
You’re welcome
Which can remove carbon dioxide from the atmosphere?
Photosynthesis in plants is a great way to reduce Co2 levels and release o2 and glucose which is a sugar all organisms anywhere need to make energy, which then in used to keep themselves active
Explanation:
Explain why red blood cells might use up oxygen, if they
have mitochondria.
Need help ASAP
what might happen if cyclins were produced constantly throughout the cell cycle
please help
Answer:
What would happen to a cell if cyclin was constitutively expressed? -Cyclin-dependent kinases would be deactivated.
The insertion of the human insulin gene into the bacterium Escherichia coli allowed it to produce human insulin. Which type of organism is E. Coli? restriction organism recombinant organism transgenic organism vector organism.
Genetically modified and engineered organisms are that can produce the gene and the product of interest when modified. Escherichia coli is a transgenic organism.
What is a transgenic organism?
A modified organism through the genetic and molecular pathway alteration is called a transgenic organism. Various techniques are employed to alter the genetic mechanism of the organism.
They are prepared by inserting a genetic fragment of interest from some other species by the method of recombination technology and genetic engineering.
The organism in which the insertion and the alteration are done to produce the product of interest are transgenic. Here E.coli get altered by the insertion of the human insulin-producing gene.
Therefore, option C. transgenic organism is correct.
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The process where DNA is copied is know as
Answer:
Replication
Explanation:
The process that copies DNA is called replication. Replication involves the production of identical helices of DNA from one double-stranded molecule of DNA. Enzymes are vital to DNA replication since they catalyze very important steps in the process.
In order to predict how much tension a muscle can produce when contracting, it is important to consider the ______ relationship of thick and thin filaments.
The muscles are composed inside mainly of fibers, filaments and proteins, where it is important to consider the length-tension relationship of the thick and thin filaments to know the tension.
What is muscle contraction?It is an organized and natural event that takes place at the level of the muscles when the fibers and proteins inside them come together, and tension is produced in the area.
Characteristics of muscle contractionIn a muscle contraction, a tension is generated that depends on the length-tension relationship, which causes a displacement of the muscle filaments.The proteins actin and myosin join together, and a force is generated so that the final movement is achieved.To know the tension, the muscle changes length and measurable external work is produced from the force and distance traveled.Therefore, we can conclude that the contraction allows us to make movements to reach and carry our extremities to different places.
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Relative to the speed of a cloud over Greenland, a cloud over the equator would be traveling
same speed
None of the answers are correct
faster
slower
Clouds move faster on the Greenland regions as compared to equator.
Factors affecting speed of cloudThe speed of cloud depends on the type of cloud and the wind flowing in that region. If the wind blows at higher rate and the cloud is lighter then the cloud will move with higher speed.
While on the other hand, more heavy cloud and low speed of wind leads to the lower speed of cloud in that region so we can conclude that wind speed and type of cloud are the factors that affecting speed of cloud.
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What Cell is squarish Shape at
Options Plant Cell
Animal Cell
Answer:
your answer will be the first option, plant cell
Explanation:
hope this helps you...!
which is the best description of the characteristics of the asthenosphere?
A. Solid, but flowing like putty
B. Liquid, but dense
C. Solid metal that is hot
D. Brittle metal that is shifting
On earth as a whole what happens to most of the precipitation?.
Answer:
It is returned to the atmosphere through evaporation and transpiration.
Explanation:
Hope this helps! :)
What is the blood-sucking creature of puerto rican lore?.
Answer:
Chupacabra
Leaving nothing but blood-soaked fields behind...
The ________ controls when the gene is transcribed by rna polymerase.
Glycolysis requires
ATP.
O sunlight.
O NADP+.
oxygen.
Answer:
Glycolysis requires two molecules of NAD+ per glucose molecule
and in addition the first phase of glycosis reaction requires atp
Explanation:
glycosis doesn't require oxygen
What can be concluded about clades 2 and 4 from this cladogram? The image depicts a cladogram with numbered and lettered branches. The image includes clades one, three, and seven on one fork of the tree, and clades two and four on the other. From clade one moving up the tree, the first fork is clade two which ends in organism group D. From clade two, clade five diverges ending in organism group C. Clade one continues up the tree, ending in organism group A. Toward the end of clade one, clade four diverges, ending in organism group B. On the remaining branch of the tree, moving upward from clade one, clade three diverges, ending in organism group E. From clade three, clade six diverges ending in organism group F. Clade seven diverges from the main branch, ending in organism group G, and the main branch ends in organism group H. Clade 2 was derived from clade 4. Clade 4 is ancestral to clade 2. Clade 4 was derived from clade 2. Clade 2 is a subset of clade 4.
Answer:
Clade 4 was derived from clade 2.
Explanation:
Answer:
Clade 4 was derived from clade 2.
Explanation:
How does the myosin head obtain the energy required for activation?.
The myosin head obtains the energy required for activation from the hydrolysis of ATP. This molecule contains high-energy phosphate bonds.
What is ATP?Adenosine triphosphate (ATP) is a nucleoside triphosphate used to carry out many cellular processes.
ATP is also one of the nucleotides used during transcription to generate an RNA strand (ofter mRNA).
Myosin is a motor protein that converts chemical energy (ATP) to mechanical energy and thus produces a given movement.
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Upon reaching the threshold for an action potential, the next step in its generation is the opening of _______ channels.
Upon reaching the threshold for an action potential, the next step in its generation is the opening of _sodium (Na)_ channels. The correct answer is sodium,
How does membrane depolarization occur?The occurrence of action potential requires the existence of active voltage-dependent channels to open and close in response to the membrane depolarization.
When depolarization reaches and supers the threshold point, voltage-dependent Na+ channels open and the ion gets into the cell.
The entrance of Na+ decreases the electric charge difference between the cellular interior and exterior. Membrane depolarizes and produces the action potential that tends to reach a potential equilibrium for Na+ = +60mV.
The higher the Na+ input is, the greater is the depolarization and the greater is the Na+ permeability.
Once Na+ channels are closed, voltage-dependent K+ channels open, increasing the membrane permeability to the ion, letting K+ get out of the cell, following the electrochemical gradient.
The closure of Na+ channels and opening of K+ channels are responsible for membrane repolarization.
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10.The green aquatic plant represented in the diagram below was exposed to light for
several hours.
bar
outsid
(80:00
-Bubbles
Light
on.
melo
H20 -
Plant
han. zims12 did w
rollibee
into do
and had
b
Which gas would most likely be found in the greatest amount in the bubbles?
(1) oxygen (2) nitrogen (3) ozone
(4) carbon dioxide
2
Answer:
oxygen
Explanation:
oxygen would most likely be found in the greatest amount in the bubbles
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