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Answer:

There are approximately 5 × 10¹⁰ capillaries in the human body

Explanation:

The motion of a fluid is such that the mass of the fluid flowing remains constant. This is known as the principle of conservation of mass in liquid flow.

The mass flow rate is the mass that passes a given point per unit time. According to the principle of conservation of mass, the flow rates at any two points must be equal, as long as no fluid is being added or taken away.

The principle gives rise tonthe continuity equation which is given below:

ρ₁A₁v₁ = ρ₂A₂v₂

Where ρ is density of fluid, A is internal area of the vessel or pipe the fluid is flowing through, v is velocity of the fluid

Since the density of blood is constant, the continuity equation above reduces to:

A₁v₁ = nA₂v₂

where A₁ is the area of the aorta, v₁ is velocity of bloodmin the aorta, n is number of capillaries, A₂ area of capillary, v₂ is velocity of blood in the capillary.

n = A₁v₁/A₂v₂

n = πr₁² × v₁ / πr₂² × v₂ where r₁ is radius of aorta and r₂ is radius of capillaries

n = (22/7 × 1.2² × 42) / (22/7 × 0.0005² × 0.005)

n = 4.8384 × 10¹⁰capillaries

Therefore, there are approximately 5 × 10¹⁰ capillaries in the human body

Here's a match of the descriptions with the correct phases of the ovarian cycle:

The ovarian cycle is the monthly series of changes that occur in a female's ovaries, specifically in the development and release of an egg (ovulation).

The cycle is regulated by several hormones produced by the hypothalamus, pituitary gland, and ovaries, and is divided into three main phases: the follicular phase, the ovulatory phase (or ovulation), and the luteal phase.

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Answer:

It is because of the axis it is on!

Explanation:

In fact, in the Northern Hemisphere, the orbit of the earth takes us further from the sun in summer. Summer is hotter than winter due to the tilt in the axis of the earth of 23 degrees. ... – the sun is higher in the sky, meaning more sunlight shines on the earth more directly.

Answer:

B. the appearance of lichens and mosses in an area where a glacier has recently melted away

Explanation:

Ecological succession, which refers to the series of changes that occurs over time in an ecosystem, can be of two types namely: primary succession and secondary succession.

Primary succession is a succession that involves an area where no form of life has grown previously, hence, the area of land is barren e.g bare rock. Primary succession is first colonized by species called PIONEER SPECIES e.g. lichens, mosses etc.

According to this question, "the appearance of lichens and mosses (pioneer species) in an area where a glacier has recently melted away" is an example of PRIMARY SUCCESSION.

Answer:

A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.

Explanation:

Explanation:

A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.follow me

Answer:

35.7 g

Explanation:

yield(%) = actual yield/theoretical yield x 100

We can calculate the theoretical yield by considering the balanced chemical equation:

MnO₂ + 4HCI —> MnCl₂ + 2H₂O + Cl₂

According to the equation, 1 mol of MnO₂ reacts with 4 moles of HCl to produce 1 mol of Cl₂. So, we can write the following mole ratios:

1 mol MnO₂/4 mol HCl or 4 mol HCl/1 mol MnO₂

1 mol MnO₂/1 mol Cl₂

4 mol HCl/1 mol Cl₂

As we have the amounts of reactants in grams, we have to convert from moles to mass by using the molecular weight (MW) of each compound:

MW(MnO₂) = 54.9 g/mol Mn + (16 g/mol x 2 O) = 86.9 g/mol

1 mol MnO₂ x 86.9 g/mol = 86.9 g MnO₂

MW(HCl) = 1 g/mol H + 35.4 g/mol Cl = 36.4 g/mol

4 moles HCl x 36.4 g/mol = 145.6 g HCl

MW(Cl₂) = 2 x 35.4 g/mol Cl = 70.8 g/mol

1 mol Cl₂ x 70.8 g/mol = 70.8 g Cl₂

Now, we have to figure out which is the limiting reactant. For this, we use the stoichiometric ratio: 145.6 g HCl/86.9 g MnO₂. We multiply the actual amount of MnO₂ by the stoichiometric ratio:

70.0 g MnO₂ x 145.6 g HCl/86.9 g MnO₂ = 117.3 g HCl  < 128.0 g HCl

We need 117.3 grams of HCl to completely react with 70.0 grams of MnO₂, and we have 128 grams of HCl. So, the reactant in excess is HCl, and the limiting reactant is MnO₂.

With the limiting reactant, we calculate the theoretical yield of Cl₂. We use the stoichiometric ratio 70.8 g Cl₂/86.9 g MnO₂:

70.0 g MnO₂ x 70.8 g Cl₂/86.9 g MnO₂ = 57 g Cl₂

Finally, we calculate the actual yield of chlorine gas (Cl₂), by using the first equation:

yield(%) = actual yield/theoretical yield x 100

⇒ actual yield = theoretical yield x yield(%)/100

                       = 57 g x 62.7%/100

                       = 35.7 g

Answer:

A) aquifer

Explanation:

surface waters are bodies of water that consist of water from rainfall etc, and aquifer does not consist of rainfall etc.

Answer:

Homologous chromosomes separate from each other during anaphase I of meiosis.

Explanation:

Meiosis is a specialized type of cell division that occurs in sexually reproducing organisms. It involves two rounds of cell division, known as meiosis I and meiosis II, which result in the formation of haploid gametes (sperm or eggs) with half the number of chromosomes as the parent cell.

During meiosis I, homologous chromosomes pair up and exchange genetic material in a process called crossing over. Then, during anaphase I, the homologous chromosomes separate from each other and migrate to opposite poles of the cell. This is followed by telophase I, cytokinesis, and the formation of two new cells, each with a haploid set of chromosomes.

In contrast, during meiosis II, the sister chromatids of each chromosome separate from each other and migrate to opposite poles of the cell, resulting in the formation of four haploid daughter cells.

Answer:

Anything on the trailing side would be pulverized against the Earth. It would be a horrible, gooey mess. But even if the Earth slowed gently to a stop, it would still be a horrible mess. Without the outward centripetal force to counteract the inward pull of gravity, the Earth would begin falling towards the sun.

Explanation:

Answer: Right inferior frontal gyrus was also activated for both reading and listening comprehension. The common areas of activation are shown in white in Figure 1. Listening comprehension showed large clusters of activation in bilateral (posterior and anterior) superior temporal and middle temporal gyri.

Explanation:

Answer:

A) The fennec Fox is an omnivore.

E) The rock squirrel, spiny lizard and fennec fox are all primary consumers.

Explanation:

Fennec fox is omnivore and they usually live in underground holes. They dig the holes with the help of their feet. They usually consume insects, some plants, eggs and small animals.

Answer:

A) The Fennec Fox is an omnivore.

C) Rock squirrels are the only consumers of Yucca.

D) Producers include Utah Juniper, Yucca, and Pinyon Pine

Explanation:

Using the food web, we do not have any information on what the Northern Whiptail and the Spiny Lizard eat.

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Answer:

C. The Bluegill population would increase, but the other organisms would not be affected.

Explanation:

Bluegill are eaten by bass. Bass would be what keeps the Bluegill population under control, but with the bass population decreasing, Bluegill would eventually overpopulate.

Explanation:

probably, Placement, since he's volunteering

The type of the Immersion SAE would be experimental research. The correct option is C.

What is Immersion SAE?

Immersion SAEs are an extension of the Foundational SAE's Agricultural Literacy component and will contribute to a student's growth in all Foundational components in an authentic, contextualized manner.

In a real-world application, the five Immersion SAE categories build on the Foundational SAE components.

SAE programs serve several important purposes and provide numerous benefits, including:

The Immersion SAE would be an experimental study. The majority of SAE programs are completed outside of regular class time, either at home or at work.

Thus, the correct option is C.

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Answer:

d

Explanation:

they will not be able to survive with no food or water

p.s. i know the other person answered it but they did not explain it

Answer: Option (D) Is correct, They will struggle to survive.

Explanation: Hope it helps!

Good luck!

Answer: semi-permeable

Explanation: Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.

Answer:   semi-permeable

Answer:

Since there are no choices to this question, I think it restores ecosystems or the organisms physical environment to a state called the "Equilibrium State".

Explanation:

The Equilibrium State keeps the ecosystems functioning. Nutrient cycles link or put the living organisms with the non living organisms together throughout the flow of the nutrients in the cycle. Remember that living and non living organisms always depend on each other.

I hope this answers your question! :)

Answer:

O The neuron has more potassium ions inside than outside.

Explanation:

The membrane resting potential is defined as the difference in electrical charge between the interior of neurons and their outer environment. In neurons, both sodium (Na+) and potassium (K+) pumps contribute to generating the resting potential. Neurons have a higher concentration of K+ inside than outside and a higher concentration of Na+ outside than inside. When a neuron is at its rest state, where the inside is negative with respect to the outside, its membrane is more permeable to K+ than Na+, and therefore the resting membrane potential is closer to the equilibrium potential of K+.

Answer:

DNA polymerase III is a holoenzyme, which has two core enzymes (Pol III), each consisting of three subunits (, and ), a sliding clamp that has two beta subunits, and a clamp-loading complex which has multiple subunits (, , , , and ).

Explanation:

The subunits used to make product in DNA replication are:

I. Alpha (α) subunit.

II. Delta ([tex]\delta[/tex]) subunit.

III. Epsilon ([tex]\epsilon[/tex]) subunit.

Nucleus is the most conspicuous cell organelle that is found in all eukaryotic living organisms.

Basically, the nucleus serves as the site for ribonucleic acid (RNA) synthesis and deoxyribonucleic acid (DNA) replication.

DNA replication can be defined as a biological process through which two identical replicas of deoxyribonucleic acid (DNA) molecules are produced from an original deoxyribonucleic acid (DNA) molecule, especially during cellular division.

This ultimately implies that, DNA replication is a biological process that occurs during cellular division and it involves the duplication of a double-stranded DNA to produce two identical deoxyribonucleic acid (DNA) molecules.

The three (3) main subunits (polymerases) used for making products in DNA replication includes the following:

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Answer:

Answer: access to medical supplies

Explanation:

Answer:

access to medical supplies

Explanation:

Answer:

The correct answer is - destroying their leaves.

Explanation:

Gypsy moths are the most important moth species as their caterpillar defoliate the leaves of the trees, shrubs, and other plants and ultimately kills them.

These moths destroy most of the leaves or separate the leaves from the trees. These moths lay their egg on the leaves of the trees and plants and their caterpillar eat these leaves for food and nutrition.

Answer:

a

Explanation:

took the test

Answer:

Rotation

Explanation:

Answer:

Yes

Explanation:

Yes this means that all of these proteins will be actively degraded and this is due to the high turnover rate which will ensure that their activity will be under tight control.

The acetylation of the N-terminal of the protein, with the Ubiquitylation of the protein by an E3 enzyme, helps in the maintenance of the homeostasis of protein activity.

Answer:

Your answer is B. Velocity