Which class of echinoderms maintains a bilateral symmetrical body plan as adults?.

When local immune responses fail to control a parasite in the early stages of infection, antigen and antigen-loaded dendritic cells move to the lymphatics and then to local lymph nodes.

What are parasites?

A parasite is any organism that lives on or in a host organism and gets its food from or at the expense of its host. A parasite cannot live, grow, and multiply without a host, For this reason, a parasite rarely kills its host, but it can spread diseases, some of which may be fatal.

There are three main classes of parasites that can cause disease in humans namely: protozoa, helminths, and ectoparasites.

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The provided question is incomplete as it lacks the essential information to give answer. however, the complete question is attached as image.

Answer:

The correct answer is option :  c. 10hrs: 14min: 10sec.

Explanation:

The question provides the following information to answer the question:

The P wave takes time to reach Seismic station A = 8 min:20 sec

P-wave arrived at seismic station A at : 10hrs:22min:30sec

So, the origin time of earthquake would be: 10hrs:22min:30sec - 8 min:20 sec = 10hrs: 14min: 10sec.

Thus, the correct answer is :  10hrs: 14min: 10sec.

The control group is always the group with no interference from the researcher. |t is the group that is utilized to compare data with a simple and basal situation (without interference). In this case, there is one group that is left without any interference, the group with no fertilizer, to understand the behaviour on all other groups in comparison to a natural circumstance. Therefore, the group with no fertilizer is the control gro

The following statement is  the mutualistic relationship that exists between certain kinds of bacteria and human health: Human digestion is aided by intestinal bacteria that obtain nutrients from the gut.

This statement explains how beneficial bacteria in the human gut play a crucial role in the breakdown of food, the extraction of nutrients, and the assistance in the synthesis of certain vitamins.

Microorganisms known as intestinal bacteria can be found throughout the human digestive system, particularly the large intestine. The group of these bacteria is referred to as the gut flora or microbiota. There are hundreds of different species of bacteria, viruses, fungi, and other microorganisms in the complex ecosystem known as the gut microbiota.

By assisting in the digestion and absorption of nutrients, producing certain vitamins, and assisting in the maintenance of a healthy immune system, intestinal bacteria contribute significantly to human health.

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Answer:

A. Intestinal bacteria obtain nutrients from the gut and aid in human digestion.

Explanation:

i got it right on my quiz

Answer:

Protons and neutrons have very similar mass, while electrons are far lighter, approximately 11800 times the mass.

Protons are positively charged, neutrons have no electric charge, electrons are negatively charged. The size of the charges is the same, the sign is opposite.

Explanation:

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The code that a program would follow to draw a rectangle after the pen down command is: "Move 100 steps, turn right 90 degrees, move 50 steps, turn right 90 degrees with two iterations."

In order to draw a rectangle, we need to move the pen in a specific pattern. The code provided instructs the program to first move 100 steps forward, then turn right 90 degrees. After that, it moves 50 steps forward and again turns right 90 degrees. This set of instructions is repeated two times, resulting in a total of four sides being drawn. By following this code, the program will successfully draw a rectangle shape.

It is important to note that the code with four iterations would result in a rectangle with longer sides, as it would repeat the set of instructions four times. However, the given question specifically asks for the code with two iterations, which would create a rectangle with shorter sides. Therefore, the correct code to draw a rectangle after the pen down command is "Move 100 steps, turn right 90 degrees, move 50 steps, turn right 90 degrees with two iterations."

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If a protein with the sequence fewprqvdmarine is treated with trypsin, what will the products be FEW PRQVMARINE

A protein is the naturally occurring, extremely the complex and substance that consists of the amino acid and residues the joined by the peptide bonds. Proteins are the present in all the living organisms and also include many essential of biological compounds such as enzymes, the hormones, and the antibodies.

Every cell in the human body is contains the protein. The basic of the structure of the protein is a chain of the amino acids. You need the protein in your diet to help that your body repair  the cells and to make the new ones. Protein is also important for the growth and the development in the children, teens, and the pregnant women.

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Answer:

Producers

Explanation:Plzz mark brainliest plz! - Lily ^_^

In a glass of water, the most common ion found is the hydroxide ion (OH-) and the hydrogen ion (H+).

These ions are formed when water molecules dissociate through a process called self-ionization or autoionization.

In a glass of water, several ions can be found, originating from the dissociation of water molecules. The main ions present are hydrogen ions (H+) and hydroxide ions (OH-), resulting from the self-ionization of water.

Water molecules can break apart spontaneously into equal concentrations of H+ and OH- ions through a process called autoionization. This occurs when a water molecule donates a proton (H+) to another water molecule, forming H3O+ (hydronium ion) and OH-.

Additionally, other ions might be present in a glass of water depending on its source. For example, tap water can contain various dissolved ions like calcium (Ca2+), magnesium (Mg2+), sodium (Na+), chloride (Cl-), and bicarbonate (HCO3-). These ions come from minerals and other substances present in the water source, such as groundwater or surface water.

It's worth noting that the specific ion composition of water can vary depending on factors like location, treatment processes, and water source. However, the fundamental ions present in water are H+ and OH- resulting from the autoionization of water molecules.

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Answer:

Right from the early stages insects are attracted to the decomposing body and may lay eggs in it. By studying the insect population and the developing larval stages, forensic scientists can estimate the postmortem index, any change in position of the corpse as well as the cause of death.

Answer: I think that it would be C but I'm not completely positive :) either way, I hope this can help out on whatever you're working on

Intraspecific competition are more intense than interspecific competition because the individuals have the same niche so they are competing for exactly the same resources.

Intraspecific competition can be intense at high population densities. Because High population density leads to reduced survival rates, slow growth rate and decreased reproductive rate .

Competition is assumed to shape niche size, affecting survival rate of species and coexistence. For example  As the density of plants increases, there is a corresponding decrease in performance, reflected in a reduction in the overall size and weight of plants. Intraspecific competition is an interaction in population ecology, where same species compete for limited resources.

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Natural selection occurs in a population of organisms of the same species when the individuals are C. are genetically different and exhibit different characteristics.

Natural selection most effective acts at the populace's heritable trends: choosing for useful alleles and, thus, growing their frequency withinside the populace, at the same time as choosing in opposition to deleterious alleles and, thereby, reducing their frequency. This procedure is referred to as adaptive evolution.

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A. Adrenal: The adrenal glands are located on top of the kidneys and consist of two parts: the outer adrenal cortex and the inner adrenal medulla. The adrenal glands produce various hormones that are involved in regulating metabolism, stress response, and blood pressure.

B. Pancreas: The pancreas is an organ located in the abdominal region. It plays a crucial role in the digestive system by producing digestive enzymes and hormones, including insulin and glucagon, which regulate blood sugar levels.

C. Thyroid Gland: The thyroid gland is located in the front part of the neck, just below the Adam's apple. It produces hormones that regulate metabolism, growth, and development in the body.

Based on this general information, it is still unclear which option would be the most appropriate for the box with the question mark without further context or details. If you can provide more information about the specific question or the context in which these options are presented, I would be happy to provide a more specific explanation or answer.

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The answer to this question depends on the context or category being considered, as all three options are glands that produce different hormones and have different functions.

The adrenal gland produces several hormones, including adrenaline, cortisol, and aldosterone, which are involved in the body's stress response, metabolism, and fluid balance.

The pancreas produces hormones such as insulin and glucagon, which regulate blood sugar levels, as well as enzymes that aid in digestion.

The thyroid gland produces hormones such as thyroxine (T4) and triiodothyronine (T3), which regulate metabolism and growth and development.

Without more information about the context or category being considered, it is not possible to determine which of these options best belongs in the box with the question mark.

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Answer:

Fossil Resin

Explanation:

The type of fossilization that occurs when a sticky substance from plants captures and preserves an organism is Fossil Resin.

Fossil resins are usually trapped in the resin that some trees and plants including amber, copal, and retinite exude.

Amber is also a fossil resin. Under the right conditions, resins polymerize and turn into copal. Copal matures into amber after several million years.

Answer:

you are correct sir. It is a controlled experiment

Explanation:

You are correct, It is C. A Controlled Experiment!

The inner composition of the cell is maintained due to the fact the plasma membrane is selectively permeable to small molecules.

Most organic molecules are not able to diffuse via the phospholipid bilayer, so the plasma membrane bureaucracy a barrier that blocks the unfastened alternate of molecules among the cytoplasm and the outside surroundings of the cell.

Specific transport proteins  then mediate the selective passage of small molecules throughout the membrane, permitting the cell to govern the composition of its cytoplasm. Despite variations in shape and function, all dwelling cells in multicellular organisms have a surrounding cell membrane.

As the outer layer of your pores and skin separates your frame from its surroundings, the cell membrane (additionally called the plasma membrane) separates the internal contents of a cell from its outside surroundings. This cell membrane offers a protecting barrier across the cell and regulates which substances can by skip in or out.

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Answer:

Things that have matter are physical substances that occupy space and have mass. This means that things that have matter are made up of particles and have a physical presence. Matter can exist in different states, such as solid, liquid, or gas. Examples of matter include rocks, water, air, and living organisms. Things that don't have matter, on the other hand, are not physical substances and do not occupy space or have mass. For example, light and sound are forms of energy that do not have matter. They can be observed and measured, but they do not have mass or take up space.

Explanation:

Answer:

because they belong in the fungi kingdom

Explanation:

Answer:

Mushrooms

Explanation:

Mushrooms belong to the fungi kingdom

Answer:

D. They share a more recent common evolutionary ancestor with salamanders than they do with sharks.

Explanation: Just took the test and got it correct

The cladogram shows that lizards share a more recent common evolutionary ancestor with salamanders than they do with sharks.

A cladogram is a diagram in the form of a tree wgich shows the evolutionary relationship between organisms based on similarities shared in structure or function.

The cladogram given show that sharks, lizards and salamanders have a common origin but that Lizard diverges from salamander with the introduction of amniotic membrane.

Therefore, Lizards share a more recent common evolutionary ancestor with salamanders than they do with sharks.

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Answer:

B

Explanation:

Selective Breeding is the process by which organisms choose their mate based off of specific traits.

Answer: Exponential

Explanation:

The main requirement for the population of a species to grow is food. When there is food, a organisms that are born will be able to live longer because food will be able to sustain them.

This is what happened with humans during the Neolithic Revolution when we began farming.

The general trend is that the more food that is available, the higher the population growth. When these butterflies arrived and found no competition for food, their population would increase in the highest way possible which is exponentially because there would be plenty of food to go around.

Answer:

Exponential growth

Explanation:

Without any competition for food or space, the butterfly species likely experienced exponential growth.

The lack of competition would have allowed the population to flourish, as they would have excess amounts of resources, food, space, and other limiting factors.

So, they most likely exhibited exponential growth.

The one-way parasitism and predation differ - Predation results in death while parasitism does not.

A parasite

A predator

Thus, the one-way parasitism and predation differ - Predation results in death while parasitism does not.

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The glial cells that line the cavities of the brain and spinal cord and secrete and circulate cerebrospinal fluid (CSF) are called ependymal cells.

Ependymal cells are a type of neuroglial cell that form a barrier between the brain or spinal cord tissue and the CSF-filled cavities, known as ventricles in the brain and the central canal in the spinal cord.

Ependymal cells have specialized structures called cilia on their surfaces, which help to circulate CSF throughout the ventricles and central canal. They also play a role in producing and regulating the composition of CSF, which serves as a protective and nourishing fluid for the brain and spinal cord.

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Based on the given information, the most likely representation of the change in behaviour is "a learned behaviour that is beneficial to the prairie dogs". Therefore the option B is correct.

Initially, the young prairie dogs were frightened of any large animal that came near them and would hide in their burrows. However, over time, they learned to ignore large animals such as humans and bison because they realized they posed no immediate threat. This behaviour change is likely beneficial to the prairie dogs as it allows them to conserve energy and avoid unnecessary hiding when no actual danger is present.

On the other hand, the prairie dogs still hide when wolves, coyotes, and foxes come near their burrows. This indicates that the response to these specific predators is innate, suggesting that the prairie dogs have an instinctual fear response towards potential threats that pose a higher risk to their survival.

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There are four types of water energy and they are:

Thermal power plants: Steam is used in thermal power plants for the generation of electricity. Pressurized water vapour is used for the running of turbines on the power plants which generates electricity.

Geothermal energy: Here, the water is heated from the inside the Earth for the creation of steam. There are times when steam rises naturally to the surface which is harnessed for the generation of electricity.

Hydropower: Electricity is generated by running water falling from a distance on the turbines. Water is stored in the reservoirs which have potential energy and are released from a lower elevation. This energy is used for the generation of electricity.

Tidal energy: Tidal energy is obtained from the tides created in the ocean. Also, tidal energy is one of the renewable sources of energy.

Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. The bio-signals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex.

It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International 10–20 system, or variations of it.

Electrocorticography, involving surgical placement of electrodes, is sometimes called "intracranial EEG". Clinical interpretation of EEG recordings is most often performed by visual inspection of the tracing or quantitative EEG analysis.

When electroencephalogram (EEG) patterns over brief periods are recorded in response to specific stimuli, these EEG patterns are referred to as event-related potentials (ERPs).

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Answer:

humidity

Explanation:

Answer:

Humid

Explanation:

When the air is humid, it has a lot of water vapor in it.