Answer:
d. It avoids the depletion of soil nutrients.
Explanation:
Crop rotation is the process of planting different crops in the same area of land in rotation. This allows the breathing of the soil as well as the retention of nutrients in the soil.
Crop rotation is one form of conserving soil as it helps in saving the nutrients of the soil from getting depleted. As different crops require different nutrients, the change in crop plantation between different types of crops help in maintaining the fertility of the land. This way, when crops are planted in rotation, there is also the rotation of the different nutrients required for the different crops planted, thus allowing the cycle of nutrient change to take place.
Thus, the correct answer is option d.
What is a nebula? A. The core of a massive star B. A cloud of gas and dust in space C. A swirling disk with a lot of gravity D. The debris remaining after a supernova
Answer:
its B. a cloud of gas and dust in space
Nebula is a cloud of gas and dust in space. The correct option is B.
What is special regarding nebula?A nebula is a distinct luminescent component of the interstellar medium that can be composed of ionized, neutral, or molecular hydrogen, as well as cosmic dust.
When stars form within a nebula, they emit a stream of charged particles known as stellar wind.
Massive stars and young stars have stellar winds that are much stronger than the Sun's.
When the wind collides with the gas in the nebula, it creates shock waves or hydrodynamic instabilities, which shape the gas clouds.
Nebulae are frequently star-forming regions, as seen in the Eagle Nebula's "Pillars of Creation."
Thus, the correct option is B.
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Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
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Answer: It's A
Explanation:
A nonnative species of squirrel is introduced into a forest. Which would most likely prevent this squirrel from becoming an invasive species?
A. There are no natural predators for the squirrel in this ecosystem.
B. The squirrel must compete with stronger organisms for resources.
C. The forest ecosystem has very low biodiversity.
D. The squirrel is able to reproduce quickly in this ecosystem.
Answer:
B
Explanation:
competing with stronger organisms makes it difficult for the squirrel to be invasive
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If a nonnative species of squirrel is introduced into a forest, one of the things that can prevent it from reaching an invasive status is if the squirrel competes with stronger organisms for resources.
Competition is one of the factors that limit the growth of organisms' populations.
All other factors being equal, a combination of some of the following will make the squirrel attain an invasive status:
The absence of natural predators means that the squirrel's population is not threatened in any way.Low biodiversity in the forest ecosystem means that the squirrel will experience very little to no competition for resourcesReproducing quickly in the ecosystem means that the population will boom in no time.More on invasive species can be found here: https://brainly.com/question/22117564
How many brains does a octapus have?
Answer:
9 brains
Explanation:
No explanation, but you can fact check this by looking it up :)
Answer:
9 Brains are there...!
hope this helps
Adrian caught a virus while staying with his grandmother. A few years later, his mother and sister got the same virus. This virus could spread through touch and direct contact. However, Adrian did not contract the virus this time, even though he was living with his mother and sister. Why did he not get sick? Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it. Adrian’s innate
Answer:
Adrian's adaptive immune system remembered the antigens from the virus. so he becomes immune to it.
Explanation:
Answer:
Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it.
Adrian’s adaptive immunity produced a higher amount of specific antibodies for the antigen, preventing the virus.
Explanation:
lant cells can synthesize energy-rich organic molecules, and later break them down to extract that energy for performing life processes where does it occur?.
Answer:
Two processes were described in this question, hence, the location of the two processes are as follows:
synthesize energy-rich organic molecules- CHLOROPLAST
Break them down to extract energy- MITOCHONDRIA
Explanation:
Plant cells are unique cells capable of synthesizing their own food via a process called PHOTOSYNTHESIS. The process of photosynthesis, which occurs in an organnelle called CHLOROPLAST, synthesizes a sugar (glucose), which is an energy-rich organic molecules i.e. it stores energy in its chemical bonds.
However, to harness the usable form of energy stored in the chemical bonds of Glucose, the cells need to break down the glucose molecule. Plant cells break down glucose in a process called CELLULAR RESPIRATION in order to convert the stored energy in Glucose to a usable form called ATP. This extraction of ATP molecule needed for every life process of the plant cell is carried out in another organnelle called MITOCHONDRION.
Which equation has water as a product in the chemical reaction?
Answer:
What are the options? If I had to guess NaOH+H2 Na+H2O
Explanation:
Answer:
B. NaOH + -> Na + H2O
Explanation:
Which types of measurement are used to describe quantities of heat and temperature ?
Answer:
There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.
Explanation:
Hope this helps you!
Which statement describes gravity?
There is no defined unit of measurement for gravity.
O Gravity is the force that pulls objects toward Earth's center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
Answer:
Gravity is the force that pulls objects toward the Earths centre
Explanation:
Answer:
O gravity is the force that pulls object towards Earths centre.
Explanation:
Pollen grains help scientist
Answer:
true
Explanation:
Pollen grains help scientists identify plants and make assumptions on past climate conditions. understand tree growth and make assumptions on past climate conditions.
Answer:
A
identify plants and make assumptions on past climate conditions.
the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall
Answer:
answer is alveolar wall
Answer:
Option A
Explanation:
Alveolar Wall forms the main respiratory surface where exchange of gass happens.
what happens if stomach is removed
Answer: you die
Explanation:
Answer:
What happens after your stomach is removed?After surgery, the way you eat and digest food will change, and it’s important that you carefully follow your doctor’s recommendations for eating to ensure your body is absorbing much-needed nutrients.“It is important to try to consume as many calories as possible to minimize rapid weight loss in the first few months following surgery, and to take in nutrients that the body needs to aid in the healing process,” said Jeffrey M. Farma, MD, FACS, a surgical oncologist at Fox Chase Cancer Center.“Eventually the desire to eat and enjoy food will return,” he said.Eating after your gastrectomyWithout your stomach, you aren’t able to handle regular portions of food and may not even feel hungry. Even if you are not hungry, it is important to remember that nutrition is a vital part of your health.You will need to eat smaller amounts of food more often – six to eight small meals a day. Your doctor or nutritionist may also recommend that you stay upright for some time after eating. Your health care team can help you adjust your diet if you are having problems eating.Some patients may experience a condition called dumping syndrome. When part or all of the stomach is removed, the food that is swallowed quickly passes into the intestine, leading to problems with nausea, diarrhea, sweating and flushing after eating. There are treatments to help with these symptoms.“Since the stomach is no longer there to do the grinding and breakdown of food, it is important that patients take small bites and thoroughly chew the food,” Farma said.Maintaining your weight without a stomachConsuming enough calories to return to your favorite activities will happen over time. Nutritious, high calorie, low sugar foods provide the best bang for the bite. Calories are your body’s first priority.“You will not be able to eat the same quantity of food as you did before your surgery, so it is important to get the calories in smaller amounts of high calorie foods,” Farma suggested.Dietary guidelinesEat a variety of foods including fruits, vegetables, whole grains, protein-rich foods and dairy, which provide a good balance for every meal.Try not to go for more than 2 or 3 hours without eating.Carry healthy snacks so you can take a bite here and there.Nutrient-dense liquids can provide needed calories and are sometimes easier to consume than solid foods. Consider drinking milk, eggnog or unsweetened juice instead of coffee, tea or water.While you can’t change the fact that your digestive system is different, you can change your diet and lifestyle to enjoy a full and rewarding life after surgery.Which correctly lists three main causes of deforestation? air pollution, mining, logging mining, cattle ranching, logging cattle ranching, water pollution, air pollution water pollution, logging, mining
Answer:
The other guy was wrong!
The actual answer is B. or Mining, cattle ranching, logging.
I got this right on edge 2021!!!
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Please give brailiest!!!
Answer:
B) Mining, cattle ranching, and logging.
Explanation:
All I know is that logging causes deforestation which is very destructive. The other guy is correct
Continue adding new species to your volcanic island until you have a successful ecosystem. Drag and Drop the species in order to how they invade the volcanic island. Lichen, Climax community, Bushes, Primary consumers, Pollinators, Moss, Secondary consumers, Trees, Tertiary consumers, Flowers, and Grass
Answer:
The order of arrangement is as follows
Lichen →Grass → Moss → bushes → Flowers → Pollinators → Trees → Primary consumers → Secondary consumers → Tertiary consumers
Explanation:
The type of succession that results in a successful ecosystem where initial soil condition is a volcanic island devoid of life any life form and without a soil formation is that of primary succession and involves the gradual ecosystem growth in a long time duration
Organic activity in primary succession is started by pioneer organic species which develop a community of interacting organisms from their biological activities resulting in the arrival of new species and the continuing development simple initial community into a successful complex ecosystem.
What time frame best describes when earthquakes occur?
a.Daily
b.Monthly
c.Yearly
d.Quarterly
Answer:
D
Explanation:
it mostly occurs quarterly
Quarterly time frame best describes when earthquakes occur.
What is earthquake and its causes?An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.
Earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up 'elastic strain' energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.
Over 80 per cent of large earthquakes occur around the edges of the Pacific Ocean, an area known as the 'Ring of Fire'; this where the Pacific plate is being subducted beneath the surrounding plates.
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Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather
Answer:
C. range
Explanation:
Being a good marksman requires a very good range of whatever target you intends to shoot.
Type several paragraphs describing the full carbon cycle in detail. i. Discuss all components of your poster, as outlined in step 3. ii. Describe the exchange of carbon through carbon-containing compounds between an organism and the environment. iii. Describe the contributions of photosynthesis and cellular respiration within and among the four spheres. Discuss how carbon enters and leaves each of the four spheres and in what forms. iv. Discuss the role of carbon storage in organisms. b) Click “Enter” on your keyboard a few times to leave enough space to answer the following question. i. How is a model of the carbon cycle different from the actual cycling of carbon in an ecosystem? c) Make sure your paragraphs include correct sentence structure, punctuation, grammar, and spelling. d) Ask your teacher where you should save your work. Your teacher may also have specific guidelines about the file name you should use.
Answer:
The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms
Explanation:
This lab activity is designed to explore the effect of two substances on the heart rate of a Daphnia magna specimen. One of the activities in this lab is to measure the heart rate when the Daphnia is exposed to alcohol. In the experimental setup, what would be the independent variable?
Answer is given below
Explanation:
Heart rate was studied in this experiment and is the dependent variable studied or measured. This is a dependent variable. An independent variable is a variable whose modulation is not affected by any other variable in the experiment. Here is the alcohol independent variable. Other substances such as intelligence are also independent variables.which of the following best describes the process of conjunction
Answer:
there is not any options given..
Explanation:
but conjuction is a noun.it joining together elements..
for an example i can both play volleyball and football ...
hope this help you.
Which best describes the scientific process?
A. A guess about a scientific idea
B. A group of scientists
C. A type of mathematics
D. A way to answer scientific questions
SUBMIT
Answer: I thinks it’s a. A guess about a scientific idea
Explanation:
What is the Hepatic Portal Vein?
Answer: The hepatic portal vein is one of the most important vein that receives blood from the body and transports it into the liver for filtration and processing. This vein is part of the hepatic portal system that receives all of the blood draining from the abdominal digestive tract, as well as from the pancreas, gallbladder, and spleen.
‘Hepatic’ means of or relating to the liver, therefore the hepatic portal vein is a blood vessel that sends nutrient-rich blood from the gastrointestinal tract and spleen to the liver, but also delivers toxins to the liver that will be chemically modified in the proces of detoxication
Answer:
Explanation:
hepatic portal vein is located in the upper right quadrant of the abdomen. It is typically 8 centimeters long in adults. The portal vein is responsible for carrying blood from the GI tract, gallbladder, pancreas, and spleen to the liver.The hepatic portal vein originates behind the neck of the pancreas and is usually formed by the convergence of the superior mesenteric vein and the splenic vein, referred to as the splenic-mesenteric confluence.
is a general condition when an organism gains or loses one or more chromosomes but not a complete set. 2. is a general condition where complete haploid sets of chromosomes are present. 3. is a loss of one chromosome from an otherwise diploid genome. 4. is a gain of one chromosome in addition to an otherwise diploid genome. 5. is a trisomy of chromosome 13 in humans. 6. is a trisomy of chromosome 18 in humans. 7. is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species. 8. is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.
Answer:
The correct term for each description s given below:
Explanation:
1. aneuploidy - is a general condition when an organism gains or loses one or more chromosomes but not a complete set.
2. Euploidy - is a general condition where complete haploid sets of chromosomes are present.
3. Monosomy- is a loss of one chromosome from an otherwise diploid genome.
4. Trisomy- is a gain of one chromosome in addition to an otherwise diploid genome.
5. Patau syndrome -is a trisomy of chromosome 13 in humans.
6. Edwards syndrome -is a trisomy of chromosome 18 in humans.
7. autopolyploidy -is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species.
8. allopolyploidy - is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.
What role to 'epigenetics' have to do in genetic expression?
Answer:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Explanation:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Which correctly lists three main causes of deforestation?
A.) air pollution, mining, logging
B.) mining, cattle ranching, logging
C.) cattle ranching, water pollution, air pollution
D.) water pollution, logging, mining
Answer:
B
Explanation:
Took the test 2021
explain the structure of nephrons
Structure of nephron : The filtration units in the kidney are called nephrons. Each kidney has a large number of nephrons which are packed closed together. Nephrons consist of a cup shaped Structure called Bowman's capsule in which a cluster of very thin walled blood capillaries form glomerulis . This cup shaped structure is followed by long tubular structure which is convoluted , twisted and finally leads to the collecting duct.
Functions of nephron : : Nephrons help in filtering nitrogenous waste from the blood. The blood entering the glomerulus contains waste which are filtered in the Bowman's capsule. The filtrate formed may contain some useful substances such as glucose, amino acids, salts and a major amount of water. These are selectively reabsorbed as the urine flows along the tube, The amount of water reabosrbed depends on how much excess water is there in the body andhow much dissolved waste there is to be excreted .
* For structure of nephron * refer to attachment !
Importance of freezing stem cells in South Africa?
Answer:
Stem cells are special cells found in the human body which has the ability to change into different cell types and functions.
They are expensive in South Africa and are freezing the stem cells helps in the preservation of the cells for research works in the medicine. They are also used in the treatment of different illnesses which requires cells and tissue transplants.
What must happen before mistosis can being?
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Scientists hypothesize that oxygen began to accumulate in Earth’s atmosphere after the appearance of living things with the ability to
Answer:release carbon emissions
Explanation:
The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?
Answer:
Neglecting the child
Explanation:
Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.
The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not
appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness
of her baby is a better tool for facilitating mother-infant attachment. .
How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biosphere, and geosphere all at the same time? (Site 1 )
Plants take the CO2 from the atmosphere which is used in Calvin's cycle to synthesize organic compounds that end up building the plant. This fact can be proved by marking the atmospheric CO2 with radioactive isotopes of carbon, afterwards using a Geiger counter the plant will present radioactivity.
The carbon in the atmosphere is most commonly found in the form of CO2
it has a concentration of 0.04%.CO2 is a byproduct of aerobic respiration
or combustion, for example, C6H12O6+6O2-->6CO2+6H2O. The CO2 is then used by plants in photosynthesis as mentioned earlier.
Carbon is present in the biosphere because all life is made of carbon.
Carbon is present in the geosphere most commonly under the form of hydrocarbons like methane(CH4). The carbon present in geosphere is a result of organisms decay and metabolic byproducts. For example, methanogen bacteria synthesize methane in anaerobic conditions reducing hydrogen in the presence of CO2(CO2+4H2⇒CH4+2H2O). Carbon in the geosphere can also be found in coal that becomes diamond under extreme pressure and temperature.
Carbon element exists in various parts of the atmosphere in the form of gases such as carbon dioxide. The growth of land plants proof that there is carbon in the atmosphere as they perform photosynthesis.
What is Atmospheric carbon?The atmospheric carbon refers to the carbon dioxide which is present in the atmosphere. The main source of this carbon dioxide is respiration in animals.
There is an exchange of carbon from the atmosphere, vegetation, soils and the organic matter of the atmosphere, ocean and fossil fuels all of these are continually changing. The carbon cycle is the cycle through which carbon is exchanged among the various parts of the globe that is the biosphere, geosphere, and atmosphere of the Earth.
The growth of land plants is a proof that there is carbon present in the atmosphere because the land plants use carbon dioxide and water to grow. Carbon dioxide and water are both the gases and important part of the atmosphere, so when they are combined they usually form a liquid. This liquid is then absorbed by the plants and they use it to make their own food through photosynthesis.
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