Many ecosystems on Earth have evolved to depend on occasional wildfires that maintain the diversity of the ecosystem. These ecosystems are known as fire dependent ecosystems.

Which of the following best describes how wildfires can be beneficial to certain ecosystems?

Answer:

   Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.

Answer:

inactivated

Explanation:

the vaccine cannot be fully dead otherwise the vaccine wouldn't work. the vaccine cannot be alive because that would give us the disease and we are trying to prevent it. therefore, the vaccine is inactivated

The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell. Cells also maintain a higher concentration of potassium ions and organic acids on their inside.

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The cell membrane is a lipid bilayer which prevents the passage of water and ions, allowing cells to maintain a high concentration of sodium ions outside the cell. Cells also maintain high concentrations of potassium ions and organic acids inside them.

The cell membrane is also known as the plasma membrane. It is found in all cells and separates the interior of the cell from the outer environment by a lipid bilayer that is semipermeable. The cell membrane controls the transport of substances entering and exiting the cell.

Some functions of cell membrane are as follows:

This enable organisms to maintain homeostasis by regulating the materials which may enter or leave a cell.

Thus, the cell membrane is a lipid bilayer which prevents the passage of water and ions, allowing cells to maintain a high concentration of sodium ions outside the cell. Cells also maintain high concentrations of potassium ions and organic acids inside them.

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The correct answer is : The kinetic energy in the glucose is stored as potential energy in the ATP and released as kinetic energy when the molecule moves across the cell membrane.

Explanation:

Adenosine triphosphate (ATP) is produced by converting the biochemical energy from nutrients during cellular respiration in the cells of organisms. The energy gained from ATP can be widely used for different cellular activities. Several metabolic reactions take place to change the energy from glucose to ATP.

During the movement of molecule across the cell membrane, the kinetic energy in the glucose is stored as potential energy in the ATP and released as kinetic energy.

Answer:

d

Explanation:

Answer:

The result of non-disjunction of chromosomes during meiosis, producing three copies of the chromosome in the embryos -instead of two- is called trisomy.

Explanation:

With reference to genetics, a cell is diploid because it has an even number of chromosomes, distributed in pairs - each of which is contributed by a parent - and responds to the formula 2n.

In trisomy, non-disjunction during meiosis of the homologous chromosomes causes an overloadin the corresponding gamete, which during fertilization will originate an embryo whose formula is 2n+1.

Trisomias are considered mutations, which can physically and functionally affect an individual, or even make an embryo not viable. This defect can occur in both autosomes and sex chromosomes.

A very common example of this mutation corresponds to the trisomy of chromosm 21, known as Down syndrome.

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Answer:

the correct answer is trisomy

Explanation:

i got it right on usatestprep

Answer:

layer m-r tilted

Explanation:

The missing step is that Layers M-R were tilted. This conclusion is reached based on principles of original horizontality, superposition and cross-cutting relationships.

Using the principles of original horizontality, superposition, and cross-cutting relationships, we can infer that the missing step in the sequence is option A: Layers M–R were tilted. This is because the layers were initially deposited in a horizontal orientation (the principle of original horizontality). They were then disturbed, causing them to tilt before the igneous intrusion G could cross-cut through layers M–R (principle of cross-cutting relationships). The principle of superposition implies that the lower layers were deposited first, starting with M. Erosion would then occur at surface X (unconformity), allowing for the deposition of the upper layers (H, I, J) in sequence.

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B) II

Explanation:

The hurricane center is in location I on Sunday evening.

It advances forward near location II most likely on Monday afternoon.

Monday evening it moves forward and the hurricane center is almost between location II and IV.

Tuesday evening the hurricane center is in location III.

The National Hurricane Center (NHC) issues the graphical cone representation to show the movement of the hurricane centers for every 12 hours period. The cone is an uncertain representation and keeps growing wider as the uncertainty of the movement of the hurricane centers increases.

Answer:

iv

Explanation: got the answer wrong and iv was the right answer

Answer:

Kinetic Energy

Explanation:

Kinetic Energy is energy caused by motion. For instance, temperature is simply a measure of kinetic energy, or the movement of particles.

Answer:

Um Kinetic energy (hope it helps you)

Explanation:

Kinetic Energy is energy caused by motion.

Answer:

Length of the cells = diameter of field of view/ number of cells across the field of view

Explanation:

therefore   2.25= 4.5*X

X= 2.25/4.5

=0.5 number of cells

Answer:

Anaerobic glycolysis  is referred to as fast glycolysis and aerobic glycolysis is referred to as slow glycolysis

Explanation:

These terms were coined in relation to the amount of ATP generated per mole of glucose. Aerobic glycolysis produces around 38 ATP molecules, while anaerobic glycolysis generates only 2 ATP molecules per mole of glucose

Answer:

Explanation:

B.the hawks would leave or find another food source.

Answer: B

Explanation:

Answer:

*please mark me brainliest!*

It can be described as "ridge push and slab pull."

Explanation:

The three primary causes for tectonic plate movement are the convection of material in the mantle, gravity and the rotation of the planet. These forces cause each of the seven major plates and numerous other microplates to move independently of the others at a rate of a few centimeters per year.

Gravity plays a crucial role in plate tectonics by influencing the movement and interactions of Earth's tectonic plates. Gravity plays a significant role in plate subduction, which occurs when one tectonic plate sinks beneath another at convergent plate boundaries.

Plate Collision: Gravity acts to compress and deform tectonic plates during plate collisions at convergent boundaries. Mountain ranges, like the Himalayas, are formed when the gravitational force between the plates pulls them together and causes them to bend, fold, and rise.

Isostasy: The Earth's crust is kept in an isostatic equilibrium by gravity. The equilibrium between the upward pull of gravity and the buoyant force of the lithosphere (including tectonic plates) is known as isostasy.

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Answer:

You need to explain more the question or problem?

Explanation:

There are three types of muscle tissue are cardiac, smooth, and skeletal.  

1. Cardiac muscle tissue: It is located in the walls of the heart.

They appear striated.  

Control is involuntary.

Function: To pump blood through the blood vessels in your body.

2. Smooth muscle tissue: It is located in walls of hollow visceral organs, except the heart.

They appear spindle-shaped.

Control is involuntary.

Function: To move food through the digestive tract.  

To regulates air flow in lungs.

3. Skeletal muscle tissue: It occur in muscles which are attached to the skeleton.  

They appear striated.

Control is voluntary.

Function: To support the body.

It makes bones and other body parts move.

Cell shape : There are different shapes of cells which are as follows:

1. Squamous 2.Cuboidal 3. Columnar 4. Polygonal  5. Stellate

6. Spheroid 7. Discoid 8. Fusiform 9. Fibrous.

Muscular layer: The muscular layer is present in many organs in the vertebrate body.

It is responsible for peristaltic movement in body.

There are two layers of muscle.

1. Inner 2. Outer layer.  

Inner layer: The muscle of the inner layer is arranged in circular rings around the tract.

Outer layer: the muscle of the outer layer is arranged longitudinally.  

Intercellular connections or junctions: These are the structures which provide adhesion and communication between cells.  

There are mainly three types of junctions:

1. Tight junctions: It help to stop substances  from leaking across a tissue.

2. Adhering junctions: It perform the  function of cementing so as to  keep neighbouring cells together.

3. Gap junctions: It facilitate the cells to  communicate with each other by connecting the cytoplasm of adjoining  cells, for rapid transfer of ions, small molecules and sometimes big molecules.

Answer:

The Cattle Egret follows cattle and eats the insects stirred up by the cattle. They are not benefiting each other or harming each other.

Answer:

Minerals are non-renewable resource.

Explanation:

As Non-Renewable resources are those resources that cannot renew themselves. In other words, get depleted with use as the supply is limited. Minerals take years to form and once used cannot be got back in a short period.

Answer:

False minerals are not renewable

Explanation:

Minerals take time to form so when we use what one's are there they are gone.

Answer:

Statement 1: Homologous chromosomes line up at the equator in pairs.

Name of Phase: Metaphase 1

Sequence: 3

Statement 2: The cell replicates its chromosomes

Name of Phase: S-Phase, Interphase

Sequence: 1

Statement 3: Homologous chromosomes separate and move to opposite poles of the cell

Name of Phase: Anaphase 1

Sequence: 4

Statement 4: Spindle forms, DNA coils up in homologous chromosomes come together in a tetrad; crossing over may occur.

Name of Phase: Prophase 1

Sequence: 2

Statement 5: Events occur in reverse order of prophase 1

Name of Phase: Telophase 1

Sequence: 5

Explanation:

Following is a summary of the events of meiosis:

1. Interphase:

Prepares the cell for division. Duplication of DNA, duplication of centrioles occurs and the cell grows in size. At this stage the cell is diploid (2n).

2. Prophase 1:

First stage of Meiosis 1.The centrioles move to the poles of the cell, the nuclear membrane disintegrates, homologous chromosomes pair up (in the form of tetrad), form a chiasmata and then exchange segments of chromosomes with each other. This process is called crossing over.

3. Metaphase 1:

Involves the arrangement of the crossed over, homologous chromosomes on the metaphase plate which is sort of like a web of spindle fibers that originates from the centrioles.

4. Anaphase 1:

The tetrads arranged on the metaphase plate are pulled apart by the spindle fibers. This is the result of tension that build up in the spindle fibers as they grow towards opposite poles.

5. Telophase 1:

The last stage of meiosis 1. Involves the arrival of the chromosomes at the poles, the nuclear membrane starts to form and the chromosomes start decondensing. Telophase 1 yields 2 daughter cells with half the number of chromosomes as that in the parent cell.

Meiosis 2:

Meiosis 2 is exactly similar to mitosis. The only difference is that the haploid cells entering meiosis 2 do not duplicate their DNA. Meiosis 2 just involves the separation of the sister chromatids of homologous chromosomes.

Distance travelled by Bobby was 7 meters and the displacement was 5meters.

Distance is defined as the total length of the path travelled by a body from its initial position to final position. Displacement on the other hand is defined as the length of the straight line joining the initial position and the final position of the body.

Here, Bobby travelled from point A to point C via point B which took him to travel more distance. The length of distance from point A to B is 4 meters and from point B to C is 3 meters. So the total distance covered is [tex]4+3[/tex] meters = 7 meters.

While the length of path straight from point A to C is 5 meters. So displacement is 5 meters.

Answer:

The correct answer is A)  

Some energy is transferred to the organisms, and the remaining energy is released into the ecosystem as thermal energy.

Explanation:

As we move up the trophic levels in an ecosystem, we observe that the amount of energy keeps on reducing at each trophic level. This phenomenon occurs because not all energy is transferred from one trophic level to another is an ecosystem. Most of the energy is released as heat into the atmosphere. Almost, 10% of the energy is known to flow from one trophic level to another in an ecosystem.

Answer:

a and c

Explanation:

Hi there.

Sleeping pills can be affective, one common side-affects are; "slower breathing" -- slower breathing is a common factor, as a side affect. Another would be "depressed breathing".

These happen for many reasons, forcing your body to sleep isn't on the "healthy" side of your body.

Sometimes, people do get addicted to sleeping pills; and take them every night and can lead to small or major health issues.

An unwanted pill that goes into your body every night will cause unwanted side affects. That can be very harmful!  

Answer:

Monozygous twins can be described as the twins which arise from the same egg. A single egg divides into two zygotes to form the monozygotic twins. Such kind of twins are are also known as identical twins.

In a pedigree chart, the monozygotic twins are represented by a a horizontal line connecting the two diagonal lines that lead down to the gender symbols. A horizontal line between the children hence depicts that they are identical twins.

Answer:

each pair of chromosomes is separated into two identical, independent chromosomes by a structure called the mitotic spindle. The separated chromosomes are then pulled by the spindle to opposite poles of the cell.

Explanation:

Answer:

During anaphase, the chromosomes are separated into two groups that are genetically identical, and are move to the opposite pole of the cell by the spindle.

Explanation: During cell division, different changes are observed in the cell. In prophase, the chromosomes condense in the nucleus and become visible while the spindle begins to form in the cytoplasm. In metaphase, the chromosomes are arranged in the middle of the cell by the spindle. In anaphase, the spindle separate the chromosomes into two genetically identical groups and move them to opposite ends of the spindle poles. In telophase, there is formation of nuclear membrane around the two identical sets of chromosomes, spreading out of the chromosomes and breaking down of the spindle.

Final answer:

Viruses, bacteria, and fungi are three types of pathogens that cause disease by trying to get nutrients from your body.

Explanation:

The three types of pathogens that cause disease by trying to get nutrients from your body are virus, bacterium, and fungus. These pathogens invade your body and replicate inside your cells, using your body's resources to sustain themselves. For example, viruses like the flu virus invade your cells and hijack their machinery to replicate and spread throughout your body. Bacteria like Staphylococcus aureus release toxins that damage your tissues and allow them to feed on the resulting nutrients. Fungi like Candida albicans can produce enzymes that break down your tissues and use the breakdown products as a nutrient source.

Answer:

Hyponatraemia can be described as a situation in which there is a decrease in the sodium concentration of serum. Such condition arises due to excess of water due to which the concentration of the solutes becomes a lot lesser. Hence, it is also called as water intoxication.

The long-distance runner collapsed and died because he had consumed so much water that the water concentration in his body had diluted the concentration of vital minerals such as sodium. The drop-down of the sodium concentration was up to dangerous levels.

Final answer:

Water intoxication, or hyponatremia, occurs when too much water is consumed in a short period, diluting blood sodium levels which can lead to severe health issues and even death. It is particularly risksome for athletes who do not replenish electrolytes lost during intense activity. The condition emphasizes the importance of electrolyte balance along with hydration.

Explanation:

The news clip you are referring to likely discusses a rare but serious condition known as water intoxication or hyponatremia. This condition occurs when someone drinks too much water in a short period, leading to a dilution of sodium in the bloodstream. Our bodies need sodium and other electrolytes at specific concentrations to function properly. When these concentrations drop too low, it can result in symptoms ranging from headaches and nausea to more severe consequences like seizures, coma, and even death. The cells may swell from the excess water, particularly dangerous are the brain cells, which can lead to increased pressure inside the skull and possibly death.

Healthy kidneys can typically excrete up to one liter of excess water per hour, but drinking beyond this capacity overburdens the body's regulatory systems. For athletes or anyone involved in extensive physical activity, it is crucial not only to hydrate but also to replenish electrolytes lost through sweat. Simple water rehydration without electrolyte balance can lead to the dangerous dilution effect described. Thus, the runner in the news clip likely suffered from water intoxication due to excessive water intake without adequate sodium and electrolyte replacement.

Answer:

mitochondria

Explanation:

Answer:

Endangered species can be described as the species of animals or plants which are at the verge of extinction. Scientists tend to recognize the importance of every species in an ecosystem and make the world aware of the species which might go extinct. Nowadays, governments and citizens of a country pay much more attention to protect the endangered species.

Although, the wolves were a threat to some ecosystems but scientific researches have shown that these organisms can be beneficial in a number of ways. Hence, measures should be taken to protect these species. However, we can introduce species of wolves where the number of preys is more so that the ecosystem can be balanced.

Final answer:

The reintroduction of wolves is a complex issue with various stakeholders having different interests. The effects on ecosystems, like those seen in Yellowstone National Park, are positive, but conflicts with human activities such as ranching and hunting arise. Conservation decisions require balancing ecological benefits, human interests, and the rights of endangered species.

Explanation:

The decision to reintroduce wolves and its impact on humans and the environment is a complex one, not a simple yes or no question. Stakeholders such as environmental activists, cattle ranchers, and hunters all have differing perspectives on the matter. Environmental activists may favor the reintroduction due to the positive ecological effects, such as those observed in Yellowstone National Park, where wolves changed the grazing behaviors of elk, leading to the regrowth of vegetation and improved ecosystem health. Ranchers and hunters, however, could face challenges like livestock predation and changes to hunting grounds.

In addressing the protection of endangered species and undertaking large conservation projects like building dams, it is necessary to recognize the various winners and losers, including both human communities and wildlife. For instance, with dam projects, while the energy produced can benefit societies, the environmental damage and loss of ecosystem services may be irreplaceable. Thinking about biodiversity conservation, we can also consider the effectiveness of purchasing 'green' products, assessing their true impact on promoting sustainable practices.

Furthermore, when a government informs someone of an endangered species on their property, they may experience a range of emotions from pride to anger. They must weigh their development plans against conservation efforts and seek compromises that balance private rights, public interest, and species protection. Lastly, strategies to deal with human-wildlife conflicts and the effects of rewilding initiatives are essential factors in conservation planning.

Answer:

4

Explanation:

carbon atoms only have four valence electrons so they can only bond with 4 other atoms

Answer: Four (4)

Explanation: Carbon has a total of six electrons in its shell but has four (4) electrons in its outermost shell. Electrons found in the outermost shell are called valence electrons. This means that carbon needs four (4) electrons to complete its octet structure that is carbon needs four electrons to attain a stable octet structure of noble gases.

Answer:

Microscope

Explanation:

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