Bormann and Likens compared the output of two river valleys in the hubbard brook forest, one forested and the other clear cut and discovered that deforested valley had higher water flow and increase of nutrient loss.
What is Nutrient?This is referred to as a substance which is derived from different sources and provides the nourishment which is needed for the growth and survival of organisms.
Two scientists known as Bormann and Likens compared two river valleys in which one was forested and clear cut and discovered that deforested valley had higher water flow and increase of nutrient loss.
This is because the lack of trees leads to erosion occurring in the area and loss of nutrients due to the layers of the soil being washed away by water or wind.
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what are some signs of geothermal activity in a caldera ?
Vital signs of geothermal activity include volcanoes, hot springs and others
How volcanoes are signs of geothermal activitiesWhen water bodies come in contact with a hot rock, it manifest clearly as geothermal energy as this geothermal activity produce energy from overheated water which is very dangerous and life threatening.
Geothermal activities simply refers to those activities which produces renewable energy which is and always be stored in rocks and water in the center of the earth.
So therefore, when certain signs such as volcanoes or hot springs manifest, it symbolize that a geothermal energy is at work in any given caldera.
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imagine a population of galápagos finches that vary for bill size. what would we expect to occur if their main seed resource goes extinct, and another plant with much larger seeds replaces it?
We would expect that directional selection increases bill size towards a new optimum if a population of galápagos finches.
According to the theory of natural selection, those organisms which can adapt to changing conditions of the environment are able to survive and pass on their characteristics to their offspring.
If the main seed size changes and larger seeds replace them, then this would mean that larger bill sizes will be needed by the birds to survive in this environment. Those organisms that will be able to adapt to these changes will be able to survive and by direction selection, bill size would increase to a new optimum.
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features of polycystic ovary syndrome (pcos) in women with functional hypothalamic amenorrhea (fha) may be reversible with recovery of menstrual function. au carmina e, fruzzetti f, lobo ra so gynecol endocrinol. 2018;34(4):301. epub 2017 oct 27.
Irregular periods or no periods at all are the features of polycystic ovary syndrome (pcos) in women with functional hypothalamic amenorrhea
Since functional hypothalamic amenorrhea (FHA) patients have been found to have a high prevalence of polycystic ovary syndrome (PCOS) symptoms, we sought to find out what happens to these symptoms when menstrual function returns in FHA patients. Study design: prospective cohort. The study included 28 FHA patients and 30 ovulatory controls who were age-matched. The study included 28 FHA patients and 30 ovulatory controls who were age-matched. Transvaginal ultrasound was used to evaluate body mass index, serum estradiol, LH, FSH, testosterone, DHEAS, and anti-Mullerian hormone (AMH). RÉSULTATS At baseline, 12 of the 28 women (43%) had elevated AMH (>4.7 ng/mL), greater testosterone, and larger ovaries than the other 16 women with normal AMH.
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The animal cell pictured above is a lymphocyte. Describe the features that suggest to you that:
(a) It has a role in producing and secreting proteins:
(b) it is metabolically very active:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Leymphocyte?E proteins operate in the immune system by guiding and maintaining a huge transcriptional network that controls cell survival, proliferation, differentiation, and function.They are members of the basic helix-loop-helix (bHLH) family of transcription factors. The immune system's proper operation depends on the proper operation of this network.E proteins are members of the basic helix-loop-helix (bHLH) family of transcription factors and function in the immune system by directing and maintaining a large transcriptional network that controls cell survival, proliferation, differentiation, and function.Aberrations in E protein expression or function can result in a variety of defects, ranging from impaired lymphocyte development and immunodeficiency to aberrant function, cancer, and autoimmune disease.The immune system's proper operation depends on the proper operation of this network.To learn more about Leymphocyte refer to:
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tropical environments on land are well known for their abundant life; rain forests are an example. by contrast, biological productivity in tropical oceans is meager. why is this the case?
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What does it mean when a planet is in a star's habitable zone?
A- It has oxygen in its atmosphere.
B-It has a day-night cycle and a seasonal cycle that resembles Earth's.
C-It has the right temperature to have liquid water.
D- it has signs of life
When a planet is in a star's habitable zone It has the right temperature to have liquid water.
The correct option is C.
Where is the habitable zone?The orbital region around a star known as the habitable zone is where an Earth-like planet would be able to support life and have liquid water on its surface. Since liquid water is necessary for all life on Earth, it is assumed that alien life would also require it for defining a habitable zone.
What is the Earth's habitable zone?For water to continue to be a liquid, the distance at which Earth orbits the Sun is ideal. The habitable zone, sometimes known as the Goldilocks zone, is defined as being this far from the Sun. Rocky exoplanets located in their stars' habitable zones are better candidates for detection of liquid water on their surfaces.
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Which vitamins are the most likely to produce toxic effects when consumed in excess?.
The fat-soluble vitamins A, D, E, and K are stored for a very long time in the body and, when taken in excess, are more dangerous than water-soluble vitamins. A typical, balanced diet won't make someone hazardous if they are otherwise healthy.
Since fat-soluble vitamins may build up in the body, they are more prone than water-soluble vitamins to cause toxicity.
Vitamin A, D, or E overdoses are not very common but have the potential to have negative side effects
Hence, vitamins A,D,E and K are most likely to produce toxic affects when consumed in excess.
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The locations for three genes have been added to this cartoon. For clarity, the locations have only been noted on one chromatid. The lowest frequency of crossovers would occur between genes ____ and ____.
The locations for three genes have been added to this cartoon. For clarity, the locations have only been noted on one chromatid. The lowest frequency of crossovers would occur between genes a and b.
A cell generates a fresh copy of all of its DNA as it gets ready to divide, resulting in two copies of each chromosome in the cell. "Sister chromatids" refer to the two copies of the cell's original chromosome.
The two chromatids are torn apart during anaphase of cell division, and the chromatids are distributed among the cytoplasm of each daughter cell.
A vast quantity of DNA that is arranged physically into a single structure is called a "chromosome." Because of this, the "sister chromatids" are regarded as being separate chromosomes even though they are joined together. Each chromatid is thought to be its own chromosome once they are divided during anaphase.
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question 4, select all of the things that happened during the reign of terror
During the reign of terror, the Law of Suspects was enacted, allowing police to arrest anyone who did not consistently support the revolution, and the king's supporters defeated Robespierre's rebellion.
What is reign of terror?Following the establishment of the First Republic, numerous mass killings and other atrocities occurred during the French Revolution's Reign of Terror. The Committee of Public Safety carried out public executions in response to revolutionary fervor, anti-clerical sentiment, and treason accusations.The Reign of Terror was a dark and bloody period during the French Revolution. During the revolution, radicals took control of the government. Anyone suspected of betraying the revolution was apprehended and executed. The French Revolution had officially begun four years prior with the storming of the Bastille.In the pursuit of freedom and liberty by French revolutionaries, the Reign of Terror demonstrated more brutal punishments for counter-revolutionaries and foreign enemies.To learn more about reign tower, refer to:
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how do we manage the saftey of our ecosystem ??
Answer:
By keeping habitat destruction a minimum
Explanation:
We can do this by reducing the poachers and animal habitat destruction throughout Earth.
PLSSS HELPP
True or False. Prokaryotic cells have a membrane bound nucleus for their genetic information.
Answer:
no please
Explanation:
prokaryotic cells do not have and nuclear bound membrane but have nuclear particles like 70s ribosomes
treppe is the phenomenon that results in . treppe is the phenomenon that results in . a progressive increase in the force generated with repetitive stimulation maximal force production by a skeletal muscle motor unit recruitment an increase in the stimulation frequency
Treppe refers to the graduated increase in contractions caused by the exposure of the muscle to several identical stimuli. Option A is correct. A progressive increase in the force generated with repetitive stimulation
What is treppe?
When several identical stimuli are applied to a resting muscle, they generate a series of contractions that increase gradually.
Treppe is the gradual increase in muscle contraction as it is constantly exited by these repeated stimuli.
Treppe results in more forceful contractions.
Option A is correct. A progressive increase in the force generated with repetitive stimulation
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CREATE A short story about the Rise and Fall
(...and rise?) of an animal population that you can research online.
YOUR STORY MUST BE ORIGINAL AND SHOULD CONTAIN THE FOLLOWING ELEMENTS:
THE EFFECTS OF AT LEAST ONE (1) DENSITY - DEPENDENT LIMITING FACTOR
THE EFFECTS OF AT LEAST ONE (1) DENSITY - INDEPENDENT LIMITING FACTOR
THE BIOTIC POTENTIAL of your fictional population
POPULATION SIZE vs. CARRYING CAPACITY of your fictional ecosystem.
Answer:
It began to snow, but his body was so bruised and numb that snow and cold were no matching adversaries. Blood had dried around his throat, making the job easier
Explanation:
use this link and copy it then go to a paraphrasing tool
What mechanism of evolution would it be if the wider alligator tail was advantageous so that the alligator was a better
swimmer and able to live longer and have more offspring?
When species occupy comparable ecological niches and respond similarly to similar selection forces, this is known as convergence in evolution. Analogous structures are traits that result from convergent evolution.
Why does genetic variety happen? What does it entail?Gene variants, commonly referred to as mutations, and a natural process in which genetic information is reorganised as a cell prepares to divide can both result in genetic differences (known as genetic recombination). Genetic changes that affect gene activity or protein function can give an organism distinct features.
Some organisms can survive in their environment more successfully than others due to genetic variety in a group of species. Even among a small population of organisms, there can be dramatic differences in how well-suited they are to a given habitat.
The majority of mutations within an organism neither negatively nor favourably affect it.
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For certain breeds of cattle, a bull with solid red fur and a cow with solid white fur will make a roan calf that has both red and white hairs in its coat. What is this genetic inheritance pattern?.
Answer:
codominance :)
Explanation:
hope this helps
What is a substance that inhibits the growth of microorganisms on living tissue?.
Even when a muscle is at rest, it still has some degree of tension. This small amount of tension produces what is known as ______.
Even when a muscle is at rest, it still has some degree of tension, This small amount of tension produces is known as muscle tone.
What is muscle tone and how the muscle is at rest and still in tension?Muscle have a large significance in our whole human physiology and body mechanism which collectively guards.Here in the muscle is at rest that clearly means it is not under any activity.The muscle contraction and relaxation property is best explained by sliding filament theory.The muscle tone is equivalent to skinned skeletal fibres which lead to the development of tension in muscle.Hence the muscle can be at rest and it still has some degree of tension and this small amount of tension produced is called muscle tone.To know more about muscle visit:
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If there is an if number of water molecules inside and outside the cell, how will the water move?
Responses
Out of the cell only
Out of the cell only
Into and out of the cell in equal amounts
Into and out of the cell in equal amounts, EndFragment,
It will not move
It will not move
Into the cell only
Into the cell only
If there is an X number of water molecules inside and outside the cell, the the water will not move.
Because the cell is placed in the isotonic solution.
Isotonic Solution- Solutions that contain the same concentration of water and solutes as the cell cytoplasm are called isotonic solutions. Cells placed in an isotonic solution will neither shrink nor swell since there is no net gain or loss of water.
Cell- As in the case of bacteria and protozoans, a single cell can be a whole organism in and of itself. In multicellular creatures like higher plants and animals, specialized cell groups are arranged into tissues and organs. Prokaryotic cells & eukaryotic cells are two different kinds of cells.
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During the process of _______________, the genetic message from dna is encoded into mrna.
This is known as transcription. During the transcription process, mRNA is created from a DNA template.
Messenger RNA (mRNA) is a single-stranded RNA that plays a role in protein synthesis. mRNA is created from a DNA template during the transcription process. mRNA transports protein information from a cell's nucleus to the cytoplasm (watery interior), where protein-making machinery reads the mRNA sequence and translates each three-base codon into the corresponding amino acid in a growing protein chain.
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Description of carbohydrates and what is it purpose and importance
Carbohydrates are biomolecules composed of monosaccharides as subunits linked by glycosidic bonds, which are fundamental to providing energy to the organism.
What are the roles of Carbohydrates?Carbohydrates play fundamental roles mainly associated with the storage and use of energy. For example, simple carbohydrates such as glucose provide energy to be used in a fast manner, while complex carbohydrates play a role as storage of energy, which is stored in the chemical bonds.
Therefore, with this data, we can see that carbohydrates have fundamental roles associated with the storage of energy in order to be used when it is required.
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Is a bumblebee biotic or abiotic?
Answer: biotic
Explanation: :)
The activation of additional motor units in order to produce a contraction with greater tension is known as ______.
The activation of additional motor units in order to produce a contraction with greater tension is known as motor unit recruitment.
What are motor units and what is motor unit recruitment?A motor neuron is a neuron basically a motor neuron and along with all skeletal muscle fibres through axon's terminal.Sometimes the body need to speed up the contractile property of the body or the contractile strength.Motor unit recruitment is one way through which the body can activate large number of motor units to accomplish the need.By increasing the motor units number the contractile strength would be increased and hence the property would be enhanced.Hence the activation of additional motor units in order to produce a contraction with greater tension is known as motor unit recruitment.To know more about motor unit recruitment visit:
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Pls help!!!!!!!!!!!!!!!!!!!
which of the following statements is true? group of answer choices bacteria are more closely related to eukaryotes than to archaea. archaea is more closely related to bacteria than to eukaryotes. archaea is more closely related to eukaryotes than to bacteria. bacteria are more closely related to metazoans than to archaea and eukaryotes.
The true statement is that archaea is more closely related to bacteria than to eukaryotes (option B).
What is a domain?Domain is the highest rank in the classification of organisms, above kingdom; in the three-domain system.
The domains of living organisms include one of the taxa;
BacteriaArchaeaEukaryotaBacteria and Archaea are both prokaryotic meaning that they do not possess membrane-bound nucleus or organelles.
On the other hand, eukaryotes have a membrane-bound nucleus and organelles such as chloroplast, mitochondria etc.
Therefore, it can be said that archae and bacteria are similar being prokaryotic.
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I need help with this active cell division problem! Will give brainilest!!
Every cell in the body divides through a procedure known mitosis to produce new cells. Due to this, the body grows and changes. The primary objective of mitosis is to replace worn-out cells.
What is cell division and its phases?A cell cycle is a sequence of events that occurs in tandem with a cell's growth and division. The majority of a cell's time occurs in the phase known as interphase, during which it matures, copies its chromosome, and prepares to divide. The cell then completes mitosis, exits interphase, and splits to completion.
What is the importance of cell division?Genetic variation can only be created by cell division. Cell division is an important process in which a unicellular creature transforms into a new organism in unicellular organisms.
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The complete question is -
Where in your body do you think cell division is occurring ? What led you to this conclusion?
If a blood cell is sitting in a hypertonic solution, what will happen to the cell?
A. Nothing will happen to the cell, it will stay the same
B. The cell will expand as water moves into the cell to try to balance the solute concentrations
C. The cell will shrink as water moves out of the cell to try to balance the solute concentrations
D. The cell will expand as salts move into it from the outside environment.
Answer:C. The cell will shrink as water moves out of the cell to try to balance the solute concentrations
Explanation:
A cell placed into a hypertonic solution will shrivel and die by a process known as plasmolysis.
Which of the following statements is true of the food web pictured?
The statement that is true about the food web in the picture is that the deer is a primary consumer. That is option C.
What is a food web?A food web is defined as the representation of various food chains that are associated with each other at various levels.
The food web is different from a food chain because a primary consumer can have more that one secondary consumer.
From the given picture, the squirrel is a primary consumer which is being eaten by two secondary consumers such as the vulture and the tiger.
Also from the picture, the deer is a primary consumer because it feeds directly on primary producers such as the scrubs.
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as carbon dioxide enters the ocean it: group of answer choices forms carbonic acid. bonds to water molecules to increase the salinity of the ocean is used by animals for respiration. becomes a product of photosynthesis.
As a consequence of photosynthesis and diffusion from the atmosphere, oxygen enters saltwater through the oxidation of metal ions.
Result?As a consequence of photosynthesis and diffusion from the atmosphere through animal respiration, decomposition of plant and animal remnants results.
How do CO2 and seawater interact?Answer options create carbonic acid as carbon dioxide reaches the ocean. Animals need this compound to breathe by forming chemical connections with water molecules to raise the ocean's salinity. is created during photosynthesis.
Seawater absorbs carbon dioxide, which is present naturally in the atmosphere. Carbonic acid (H2CO3) is created when water and carbon dioxide mix. This weak acid dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-).
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Which of these zones is also known as the midnight zone?
A. Bathypelagic
B. Abyssopelagic
C. Hadalpelagic
D. Epipelagic
SUBMIT
capillary sphincters are: a. capable of dilating in order to increase perfusion to crucial body organs. b. circular muscular walls that regulate blood flow through the capillaries. c. responsible for constricting to compensate for decreased cell perfusion. d. under complete control of the voluntary portion of the nervous system.
Capillary sphincters are circular muscular walls that regulate blood flow through the capillaries.
Specialized cells known as muscle fibers make up the muscular system. Contractibility serves as their primary purpose. Movement is made possible by muscles that are affixed to bones, internal organs, or blood vessels. Muscle contraction produces the majority of body movement. The movement of cilia, the flagellum on sperm cells, and some white blood cells that move in an amoeboid manner are examples of exceptions to this rule. Simple movements like walking and running are produced by the coordinated action of joints, bones, and skeletal muscles. Skeletal muscles can also be seen moving in more subtle ways, which results in different face expressions, eye movements, and breathing patterns. They help with digestion, regulate respiration and heartbeat, and permit mobility. When you work out and eat well, your muscles flourish just like the rest of your body.
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