A leech attaches itself to the gums of a crocodile and sucks the crocodile's blood. Then, the crocodile opens its jaws so that an Egyptian Plover bird can kill and eat the leech. The relationship between the crocodile and the Egyptian Plover is an example of _______. A. parasitism B. commensalism C. mutualism D. predation

Answers

Answer 1
C. The crocodile gets it's teeth cleaned and the bird gets a meal.
Answer 2
c.Mutualism because the relationship helps both the crocodile and the leech eating bird

Related Questions

Imports of lumber into the United States were down 50% in 2008.
True or false

Answers

importa of lumber is true

The given statement is True.

Import of lumber in the united states decreased by 50% by the year 2008 because of globalization.

Consumption of industrial and appearance lumber increased during the 1990s and in 2000 consumption of lumber decreased.

In the year 2008 recession was associated with declines in all the segments of domestic consumption as U.S home construction declined.

What occurs if a t cell binds to an antigen and the t cell does not receive a co-stimulatory signal?

Answers

The correct answer is that "the T cell enters a state of anergy".

The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.

Answer needed ASAP!!! A rock that forms from cooling lava is classified as an _____.

Answers

An igneous rock forms from cooling lava.
Igneous is from cooling lava

Which statement best describes the composition and function of proteins in organisms?

Answers

long chains of amino acids used for building, repair, and maintenance.

Answer:

The answer is Proteins are molecules formed by amino acids and fulfill an essential function for life since they are highly necessary for the growth of the organism.

Explanation:

Proteins are molecules formed by amino acids that are linked by a type of bonds known as peptide bonds. All proteins are composed of Carbon, Hydrogen, Oxygen, Nitrogen and most of them also contain Sulfur and Phosphorus.

Proteins fulfill an essential function for life since they are highly necessary for the growth of the organism, in addition to allowing cells to maintain their integrity, defend against external agents, repair damage, control and regulate functions, among others.

A plants biomass mainly comes mainly from nutrients in the soil that are taken up by the plants roots

Answers

This statement is true

Answer: False

The mass of the plant is based on compounds made from carbon. Carbon is not absorbed from the roots, it is absorbed through the leaves in form of carbon dioxide. The process involved in the primary stage is photosynthesis. Roots absorb water and minerals or ions. These are used in reaction of the plant cells. Rest the biomass is made from glucose, which is converted into other compounds by series of reactions taking place in plant cell.

explain three ways how humans cause loss to biodiversity

Answers

The major causes of biodiversity decline are land use changes, pollution, changes in atmospheric CO2 concentrations, changes in the nitrogen cycle and acid rain, climate alterations, and the introduction of exotic species, all coincident to human population growth. For rainforests, the primary factor is land conversion. Climate will probably change least in tropical regions, and nitrogen problems are not as important because growth in rainforests is usually limited more by low phosphorus levels than by nitrogen insufficiency. The introduction of exotic species is also less of a problem than in temperate areas because there is so much diversity in tropical forests that newcomers have difficulty becoming established (Sala, et al., 2000).

Which property of connective tissue is fundamental to its function of binding tissues and organs? cells that contain actin and myosin mostly made of protein fibers regenerative properties tightly packed cells

Answers

B. Mostly made of protein fibers

Ans.

Connective tissue is defined as tissue that connects body organs and tissue and provides them support.These tissues are mainly made up of three types of components, cells, ground substance or matrix, and protein fibers (collagenous and elastin fibers).

The property that makes it able to function in binding of tissues and body organs is presence of collagen protein fibers.These fibers are made up of thin collagen filaments that provides support for the tissue and the organs, to which it connects.

Thus, the correct answer is option option). 'mostly made up of protein fibers.'

​the vitamin that is responsible for regulating the absorption and metabolism of calcium and phosphorus for healthy bones and teeth is vitamin ____. ​e

Answers

The answer is vitamin D. This is actually a group of vitamins of similar molecular structure responsible for facilitating increased absorption of calcium, magnesium and phosphate from the gut. The most important of the vitamin D compounds are vitamin D3 and D2. While vitamin D can be obtained from your diet and supplements, the major source of vitamin D is from a chemical reaction dependent on skin exposure to the sun.

A genetic study conducted over two generations found that the frequencies of genotypes in the first generation were aa: 0.36, aa: 0.48, aa: 0.16. in the second generation, genotype frequencies remained the same. according to hardy–weinberg equilibrium, what can we assume?

Answers

For the genotypic frequency to remain the same over generations, then according to Hardy-Weinburg, the following five assumptions are presumed;

1.       That the population is large enough for sampling hence there is no genetic drift

2.       Natural selection is not acting on the population

3.       No gene flow between the population being studied with another population occurred either through migration etcetera

4.        No/negligible mutations occurred

5.       Mating between individuals of the population is occurring randomly


How does the structure of a gram negative organism contribute to its virulence?

Answers

The lipopolysaccharide constituent acts as a pathogenicity in animals, causing disease. More virulence factors can be found in the periplasmic space between the outer and plasma membranes.

What is virulence?

The ability of a pathogen or microorganism to cause harm to a host is referred to as virulence. The degree of damage caused by a microbe to its host is referred to as virulence in most, particularly animal systems.

Toxins are among the most important bacterial virulence factors. Endotoxin or lipopolysaccharide (LPS) is found in the outer membrane of gram-negative bacteria, as well as several other exotoxins and enterotoxins secreted by other bacteria.

Lipopolysaccharides, proteins, and phospholipids are found in Gram-negative bacteria's outer membrane.

In animals, the lipopolysaccharide constituent acts as a pathogen, causing disease. The periplasmic space between the outer and plasma membranes contains more virulence factors.

Thus, this way, the structure of a gram negative organism contribute to its virulence.

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Final answer:

Gram-negative organisms have a complex cell structure, with a thinner layer of peptidoglycan and an outer membrane containing lipopolysaccharide (LPS). The LPS acts as an endotoxin and contributes to the virulence of these bacteria. Other virulence factors help gram-negative organisms evade the immune system and cause infections.

Explanation:

Gram-negative organisms have a more complex cell structure compared to gram-positive organisms. They have a thinner layer of peptidoglycan and an outer membrane that contains lipopolysaccharide (LPS), which acts as an endotoxin. This LPS contributes to the virulence of gram-negative bacteria by causing symptoms such as fever, hemorrhaging, and septic shock. Additionally, gram-negative organisms have other virulence factors like pili, capsules, and stress proteins that help them evade the immune system and cause infections.

Both a weight-loss center and a health club would be pleased to learn that health and fitness, along with individualism, mastery and control, and self-improvement are core values common in the _____ of the u.s.

Answers

I think the best answer would be culture. This is because all these aspects would motivate people going to the weight loss canter as well as health club in an attempt to live responsibly and healthy. In turn this would promote the business of those who own the centers as many individuals have adopted those aspects.

Los Angeles is a city on the west coast of the United States that is very close to the Pacific Ocean. Land temperatures in Los Angeles remain relatively constant because of winds blowing from the ocean to the land at night and from the land to the ocean during the day. These winds are a result of:
A) Conjunction
B) Convection
C) Nondisjunction
D) Subduction

Answers

B) Convection
hope this helps

Answer: The correct answer is convection. Winds blow because of temperature variations that cause fluids to change density and rise and fall.

Explanation:

plz help!!! lots of points!!!
Which option describes what the U.S. Green Building Council has created?
(A)government control over all engineering design materials
(B)partnerships with LEED and other government organizations
(C)sustainable materials that can be used for any design process
(D)guidelines to simplify the certification process for sustainable building and construction

Answers

Hey there budd!

Your question is stated above: Which option describes what the U.S. Green Building Council has created?

Based from my information, I know for a fact the the answer would NOT be option D. The government would not to simplify the certification process for sustainable building and construction because they want (high) quality people working for them, not people who have low certificates to work for the government.

I (seriously) believe that the correct answer to this question would actually be the first option. (A) Government control over all engineering design materials. So, this would show you that the U.S. Green Building Council has created a government to watch over and control everything that is being designed.

I hope this helps you!

Answer:

guidelines to simplify the certification process for sustainable building and construction

Explanation:

Jose and Sarah are running in the cross country meet. Their skeletal and muscular systems work to move them through the course. As they run, they breathe faster and harder and their heart rate increases.

This illustrates that body systems

A)work together.
B)work independently.
C)all have the same function.EliminateD)have no connection to one another.

Answers

A) they work together.
On USAtestprep The answer is A) working together 

Why is isopropyl alcohol a better mobile phase than h2o for permanent markers?

Answers

Rubbing alcohol or isopropyl alcohol is used because it dissolves the dye better than water. The ink from a permanent marker is insoluble in water because of its components such as pyrrolidone, glyceride, and colorant. These ingredients make permanent ink waterproof because they make are nonpolar whereas water is polar. As a rule of thumb, only like materials can combine.

Describe how draping is completed for a procedure that enters the ocular orbit

Answers

For a procedure that enters the ocular orbit, draping is completed by covering the head with a double-thickness half sheet and two towels or appropriate disposable head drapes. Then placed an eye sheet to the operative site using a fenestrated eye sheet that measures 14 inches square, with a center opening of 2 1/2 x 3 inches or by using adhesive backed aperture drape that extends over the body.

 

 

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Complete the following diagram by placing the graphics on their appropriate spots.

Answers

Answer:

Correct answer in attached file.

Explanation:

This would be the correct answer because, in order for a daughter to have two x chromosomes with the recessive b trait, she would need to obtain one b from each parent. So, each parent (the circle and the square in the diagram) would have to have the trait.

A human bone marrow cell in the prophase stage of mitosis contains 46 chromosomes. therefore, there are a total of __________ sister chromatids in this cell.

Answers

A human bone marrow cell in the prophase stage of mitosis contains 46 chromosomes. Therefore, there are a total of 92 sister chromatids in this cell.

What is bone marrow?

Bone marrow is a fluid gel-like structure that is filled in the portions of bones like a femur bone. The gel has many functions, it produces blood cells and marrow stem cells. It is red and yellow colored.

Chromosomes are thread-like structures are present inside the nucleus of the cell.  They are the main object that contains traits of an organism. There are 46 chromosomes present in the human body.

Human bone marrow contains 46 chromosomes at the phase of mitosis, In the sense of 2 chromosomes per chromatid, there will be 92 chromosomes present.

Thus,  there are a total of 92 sister chromatids in this cell.

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The nurse is preparing to reinforce instructions to a pregnant client about nutrition. the nurse plans to include which instruction in this client's teaching plan?

Answers

The nurse should plan to include this instruction in the client's teaching plan: THE NUTRITIONAL STATUS OF THE MOTHER SIGNIFICANTLY INFLUENCES FETAL GROWTH AND DEVELOPMENT.
As part of the teaching plan for the pregnant woman, the nurse should include instructions about nutrition and make the client to be aware that the food she eat will affect how the baby in her womb grows and develops. 
Final answer:

In her instructions about nutrition, a nurse should highlight the significance of a balanced diet, the importance of prenatal care, and the risk factors of obesity during pregnancy. It could also be beneficial to introduce the client to health education and nutrition programs.

Explanation:

When educating a pregnant client about nutrition, the nurse should emphasize the importance of a balanced diet that provides the necessary nutrients for both mother and fetus. This balanced diet should include a variety of foods to ensure all essential nutrients are met, as it will help maintain proper bodily functions, good health, and reproductive capability.

Prenatal care also plays an essential role in a successful pregnancy, as it helps monitor the health of both mother and fetus. This includes consultations on pregnancy planning and potentially on taking vitamins such as folic acid, which can help prevent certain birth defects.

Emphasis should be placed on the harmful implications of obesity during pregnancy, which can increase the risk of complications such as type-2 diabetes and cardiovascular disease. Additionally, it is beneficial to expose the client to health education programs like the Supplemental Nutrition Assistance Program (SNAP), which has shown success in improving at-home diets of participants, leading to healthier children.

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Which of these is an example of food engineering apex?

Answers

the answer for apex would be, The development of irrigation


Food engineering is exemplified by the optimization of freezing processes for packaged foods, the creation of modified foods with enhanced nutritional values using biotechnology, and the development of specialized food products like MREs and astronaut meals.

An example of food engineering can be seen in the design and optimization of freezing processes for food products. Engineers need to consider the best type of freezing equipment and operational parameters to ensure that food is frozen quickly and efficiently, preserving its quality and safety. A critical part of this process is to account for the packaging material, which can resist heat transfer and increase freezing time.

Additionally, the creation of modified foods, such as calcium-fortified orange juice or breads enriched with B vitamins, also represents food engineering. These foods have been enhanced using biotechnology to improve nutritional value and health attributes. Another aspect of food engineering is the development of food products aimed at specific needs, such as MREs (Meals Ready-to-Eat) for military personnel or specialized foods for astronauts, which are safe to store, easy to prepare in low-gravity environments, and nutritionally balanced.

Our bodies do not make starch, but we often eat plant foods which contain starch which we digest into _____________, the building block that is used to make starch.

Answers

The correct answer is glucose. 

Glucose is the major carbohydrate that can be absorbed and used by humans for energy. In animals, glucose is stored as glycogen in the liver and the muscle tissue in contrast to plants wherein they store glucose as amylose and amylopectin (also known as starch). In digestion of starch, it will start with the saliva where the enzyme salivary amylase will break it down to smaller molecules of starch and limit dextrins. These will be further broken down in the intestines using the pancreatic amylase forming di and trisaccharides. These di and trisaccharides will be metabolized by brush border enzyme to eventually produce glucose (and other monosaccharides that can be absorbed such as fructose and galactose).

which of the following would be the best way to determine whether a cell belonged with Archaea or bacteria?

Answers

Hey there

the answer is

 a Archean is a single celled microorganism and has no cell nucleus  
and Bacteria constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals 

so im going to say D as the answer

Hopes this helps u :)  

How does the nervous system determine the strength of stimulus?

Answers

frequency of action potentials hopes this helps :))

In the "abcd" rule for the symptoms of melanoma, the letters stand for question 15 options: actual size, bleeding, cancer stage, and dark appearence asymmentry, border irregularity, color, and diameter asymmetry, border uniformity, color, and delayed healing acute pain, bleeding, constant swelling, and diameter

Answers

This choice is the one you want.
A assymetry
B border irregularity
C Color
D Diameter. (and growth)

Fertilizer use and crop rotation with legumes both increase the availability of which of the following nutrients in soil

Answers

The answer to this question would be Nitrogen

a. At the end of replication, two ____ copies of DNA exist.
b. Both copies consist of one ____ strand plus one ____ strand.

Answers

the answer to your question is two DNA molecules. 2 both copies consist of one new chain and one old chain nucleotides. half of the chain is part of the original DNA molecule the other brand new molecule

A 60-year-old man is unable to walk more than 100 yards without experiencing severe chest pain in his left leg; the pain is relieved by resting for 5-10. he is told that the arteries of his leg are becoming occluded with fatty material and is advised to have the sympathetic nerves serving that body region severed. explain how such surgery might help to relieve this man's problem

Answers

This is a case of peripheral artery disease which is described as the occlusion of the arteries of the extremities due to atherosclerosis causing ischemia and pain of the affected extremity. The pathophysiology works similarly in angina wherein there is occlusion of the coronary arteries. The resection of the sympathetic nerves (sympathectomy) innervating the affected leg will decrease the tone of the arteries leading it to vasodilate and increase the vessel diameter thus relieving the occlusion and eventually the ischemia.
Final answer:

The man is experiencing peripheral artery disease due to atherosclerosis. The suggested surgery, severing the sympathetic nerves, may allow more blood flow in the arteries reducing the pain. Alongside lifestyle changes, surgical treatments like angioplasty, endarterectomy, or coronary bypass might be employed based on the severity of the occlusion.

Explanation:

The 60-year-old man you described is likely experiencing a condition called peripheral artery disease, linked to atherosclerosis, where the arteries become blocked by fatty plaque deposits. This causes pain during movement, as the muscles cannot get sufficient blood flow. The suggested surgery involves severing the sympathetic nerves in that region, which could provide relief because these nerves control the contraction and relaxation of the arteries. If relaxed, the arteries may allow more blood flow, reducing pain after walking.

Treatment typically involves lifestyle changes, including weight loss, smoking cessation, regular exercise, and a diet low in sodium and saturated fats. Medications to reduce cholesterol and blood pressure may also be prescribed. If the arteries' occlusion is severe, a surgical solution like angioplasty could be employed, where a catheter is inserted into the vessel at the point of narrowing and inflated to widen the opening. A small mesh tube called a stent may be inserted to keep the vessel patent. In an endarterectomy, plaque is surgically removed from the arteries. Alternatively, in a coronary bypass procedure, a non-vital superficial vessel from elsewhere in the body, or a synthetic vessel, is used to create a bypass around the occluded artery.

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A large water wave called a ______ can be generated by underwater earthquakes.

Answers

it is called a tsunami

Under what conditions might a person with rh- blood develop rh agglutinins

Answers

A person who has rh- blood can develop rh agglutins through;

1. Pregnancy.
2. Transfusion.
3. Exposure to blood.

Agglutination is termed as clumping of particles. It is the process which occurs when an antigen is mixed with its corresponding antibody known as isoagglutinin.
When people are being given blood transfusion of wrong blood group then the antibodies will react incorrectly with the transfused blood group, then the erythrocytes clump up and stick together which causes them to agglutinate.
Final answer:

A person with Rh- blood may develop anti-Rh agglutinins if exposed to Rh+ blood through transfusion or pregnancy with an Rh+ baby. Sensitization and a subsequent exposure can cause hemolytic disease of the newborn, but this condition is preventable with RhoGAM injections.

Explanation:

A person with Rh-negative (Rh-) blood may develop anti-Rh agglutinins, or antibodies, under certain conditions. This process is known as sensitization. It occurs when a person with Rh- blood is exposed to Rh-positive (Rh+) blood, which can happen through a blood transfusion with Rh-incompatible blood or during pregnancy when an Rh- woman gives birth to an Rh+ baby. The first exposure to Rh+ blood cells typically does not cause a reaction; however, the immune system starts to generate anti-Rh antibodies. Upon a second exposure to Rh+ blood, such as during a subsequent pregnancy with an Rh+ fetus, these antibodies can cross the placenta, resulting in agglutination and hemolysis of the fetal red blood cells, a condition known as hemolytic disease of the newborn (HDN) or erythroblastosis fetalis. This can be severe and life-threatening to the fetus but can be prevented with the injection of RhoGAM during and after the first pregnancy.

What is an environmental purpose of buying hunting licenses?

Answers

To keep populations of wild animals stable... I just answered it and its right
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Grace saw 16 bird habitats at the zoo's aviary. The sign said each habitat had 12 birds.How many birds were in all? a local hamburger shop sold a combined total of 757 hamburgers and cheeseburgers on Sunday. There were 57 more cheeseburger sold than hamburgers. How many hamburgers were sold on Sunday? The electric field between two parallel plates has a magnitude of 875 n/ c. the positive plate is 0.002 m away from the negative plate. The operating system allows the computer and its devices to communicate.A. TrueB. False When cells leave the cell cycle, they exit during G1 phase and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase. Cancer cells are different because they cannot enter G0 phase and are likely to do which of the following? A) Fall to complete S phase B) Mutate during G1 phase C) Repeat the cell cycle continuously D) Die after completing mitosis A retired couple invested $6000 in bonds at a simple interest rate of 5.1%. At the end of one year, how much interest did they receive on their investment? Please show your work. To remove a tight fitting lid from a jar, Megan runs the lid under hot water. What happenes to the jar lid when its temperature increases? (a) The temperature increases, the lid expands (b) The potential energy decreases, and the lid expands (c) The potential energy increases, and the lid contracts (d) The temperature decreases, and the lid contracts Individuals who believe that they control their own destiny are described as having a:a. high mach personality.b. high external locus of control.c. low mach personality.d. low introversion characteristic.e. high internal locus of control. Rhesus monkeys often acquire a fear of snakes after watching the reactions of other monkeys around snakes. based on what is known about learning, you should conclude that rhesus monkeys may acquire a fear of snakes through the process known as what is generally known before A party's National Convention begins The reading on the vernier scale provided is ABC choice in the picture What is the missing number 200,188,152,80,8 A major cause of antagonism toward the "new immigrants" who came to the united states after 1880 was the belief that they Which statement BEST describes a trend in Africa following the end of European colonization and imperialism there?Question 6 options:economic boomethnic conflictreligious harmonypolitical unification The bases of an isosceles trapezoid are represented by 4x and 2x. The height of the trapezoid is represented by (x 6). Which polynomial expression BEST represents the area of the trapezoid?A)3x2 18xB)3x2 + 18xC)3x 18D)6x2 + 36x which plant has a visible leaf modification that will help it converse water in extremely dry environments? Exports unlimited is an unlevered firm with an aftertax net income of $52,300. the unlevered cost of capital is 14.1 percent and the tax rate is 36 percent. what is the value of this firm? Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an f2 generation. the results were as follows: 6022 yellow and 2001 green (8023 total). the allele for green seeds has what relationship to the allele for yellow seeds? Determine the distance between point (x1, y1) and point (x2, y2), and assign the result to pointsdistance. the calculation is: distance=(x2x1)2+(y2y1)2distance=(x2x1)2+(y2y1)2 you may declare additional variables. ex: for points (1.0, 2.0) and (1.0, 5.0), pointsdistance is 3.0. Which type of financial statement should you look at if you want to see a company's profits and losses over a specific period of time?A.Income statementB.Balance sheetC.Statement of owners' equityD.Cash flow statement