What are the 3 major organs of excretion and what do they excrete?

Answer:

The heart has four chambers and four main blood vessels that either bring blood to the heart, or carry blood away.

The four chambers are the right atrium and right ventricle and the left atrium and left ventricle. The blood vessels include the superior and inferior vena cava. These bring blood from the body to the right atrium. Next is the pulmonary artery that carries blood from the right ventricle to the lungs. The aorta is the body's largest artery. It carries oxygen-rich blood from the left ventricle to the rest of the body.

Beneath the tough fibrous coating of the heart, you can see it beating.

Inside the chambers are a series of one-way valves. These keep the blood flowing in one direction.

Dye injected into the superior vena cava, will pass through all the heart's chambers during one cardiac cycle.

Blood first enters the heart's right atrium. A muscle contraction forces the blood through the tricuspid valve into the right ventricle.

When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery. Then it travels to the lungs.

In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left atrium.

From there, blood is forced through the mitral valve into the left ventricle. This is the muscular pump that sends blood out to the rest of the body.

When the left ventricle contracts, it forces blood through the aortic semilunar valve and into the aorta.

The aorta and its branches carries the blood to all the body's tissues.

Answer:

a. As vapor condenses, it depends (specifically; leads to) rain or snow on the windward slope

Explanation:

The orographic effect which is the changes in masses of air as  it moves along the mountain sides, up or down is the way the mountains have an effect on the climate

The orographic effect of mountains can be analyzed based on either the windward side, (which is the side that faces the incoming wind), or the leeward side (which is the opposite side of the mountain)

The moist and warm air from the oceans and other large water bodies are carried by wind onto the mountains where the moist wind is directed upward by the obstructing mountain wall.

As the elevation of the warm moist wind increases along the mountain, the cooler temperatures at the high altitudes forces the air to cool down, until the dew point is reached, which leads to precipitation of rain or snow.

Answer: obligate anaerobe

Explanation: This experiment established that a bacterial isolate is subcultured into same medium in two different plates, but one is placed in an aerobic condition (i.e., presence of oxygen) while the other in an anaerobic condition (i.e., absence of oxygen), and the result shows that there was no growth on the plate incubated on the incubator shelf, whereas there was growth on the plate conditioned anaerobically.

This simply translates that the bacterium does not need oxygen to grow i.e., It’s an anaerobe. Moreso, assuming it grows on the two plates we would say it's a facultative anaerobe.

Thus, since it growth was only established on the plate with anaerobic condition, it's an obligate anaerobic bacterium.

Which situation do u mean?

Answer:

Development work is necessary for the development of the nation because if the nation will be developed there would be many facilities for the citizens of that nation and development it leads to to economic prosperity.

Explanation:

I hope it help you friend

Answer:

Virus 

Explanation:

virus falls on the gray area which is between nonliving and living things.

Answer: the earth was just starting to develop really well and well enough for life.

Explanation: atmospheric oxygen and oceanic calcium levels went up, but nobody needs to know that much facts about how earth developed, But the group called phyla started growing because of these conditions

Answer:

Explanation:

Tôi nghĩ rằng nếu quan trọng thời điểm đó phải là hình thành tầng ozon tạo tiền đề thiết lập hệ sinh thái

Answer:

Suitability of environment and tolerance.

Explanation:

Suitability of environment and tolerance is the reason which tells that an introduced species might be very successful in a new environment. The species have all the adaptations that helps in the survival of introduced organism. Strict checking on the airports and destruction of plant species that the person bring with it are the actions take by the government that prevent the introduction of additional new species in the ecosystem.

The difference between pectin and amylopectin is that amylopectin has more branching than pectin.

Hence, the correct option is 3. Amylopectin has more branching.

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This representation called as karyotype, the gender of the individual is male and this individual have the correct number of chromosomes.

Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule.

Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure.

a component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome. There are typically 23 pairs of chromosomes in each cell.

An individual's entire set of chromosomes is known as their karyotype. The phrase can also refer to an image created in a lab showing a person's chromosomes separated from one cell and organized in numerical order.

Present-day female humans have a single set of identical X chromosomes. Instead of a matched pair, male humans have one larger X and one smaller Y chromosome.

Thus, this image, known as a karyotype, shows that the person is male and has the appropriate amount of chromosomes.

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Answer:

precipitation

Explanation:

Precipitation is the process of water cycle from which the well obtain water because in precipitation water goes inside the well. Precipitation refers to rainfall and snowfall so the water of rainfall goes inside the the soil and reaches the water table which leads to increase in the water level so we can conclude that precipitation is the process which increase the amount of water of the well.

Answer: Groundwater

Explanation:

I got it right!

Answer:

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Explanation:

ft7odt8ugde86rfgef

Price discrimination is impossible in a market with perfect competition, and the average total cost (ATC) curve is identical to the marginal cost curve (MC).

Price discrimination is a sales strategy in which the seller charges different prices for the same item or service oriented on what the seller believes the customer will agree to.

In sheer price discrimination, the seller charges each customer the highest possible price.

Price discrimination occurs when various prices are charged to different customers.

This is not feasible in a perfectly competitive market because there are numerous firms competing for the price; however, it is possible in a monopoly because people have no other place to buy.

In a monopoly, price discrimination is the practice of charging different prices for a product.

Monopolies typically have greater control over providers than regular sellers, allowing them to significantly influence the selling prices of the suppliers.

Thus, due to this, price discrimination is not positive even under perfect market conditions .

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Answer:

Females do not have to compete for a mate.

Explanation:

Due to grouping of animals, females do not have to compete for a mate because each group has its own male. They have a male with which she mate and produce fertile offspring and has a complete family so we can say that the benefit of such type of social group structures is that females do not have to compete for a mate in the population as compared to other animals.

Answer:

A. female's do not have to compete for mates.

Explanation:

Answer:

I think that the answer is Dominant.

Explanation:

Helpful?

Answer:

However, when eukaryotic cells are not dividing — a stage called interphase — the chromatin within their chromosomes is less tightly packed.

Answer:

1 Land resource is important because humans not only live but also perform all economic activities on land. Besides, land also supports wild life, natural vegetation, transport and communication activities.

2 Mineral. The largest component of soil is the mineral portion, which makes up approximately 45% to 49% of the volume. ...

Mineral. The largest component of soil is the mineral portion, which makes up approximately 45% to 49% of the volume. ... Water. Water is the second basic component of soil. ...

Mineral. The largest component of soil is the mineral portion, which makes up approximately 45% to 49% of the volume. ... Water. Water is the second basic component of soil. ... Organic matter. Organic matter is the next basic component that is found in soils at levels of approximately 1% to 5%.

Gases.

Microorganisms.

3 Loam soils generally contain more nutrients, moisture, and humus than sandy soils, have better drainage and infiltration of water and air than silt and clay-rich soils, and are easier to till than clay soils.

4 Soil organisms represent a large fraction of global terrestrial biodiversity. They carry out a range of processes important for soil health and fertility in soils of both natural ecosystems and agricultural systems.

5 Soils provide anchorage for roots, hold water and nutrients. Soils are home to myriad micro-organisms that fix nitrogen and decompose organic matter, and armies of microscopic animals as well as earthworms and termites. ... Soil plays a vital role in the Earth's ecosystem. Without soil human life would be very difficult.

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Lymphocyte (Cell B)

Explanation

Answer:

true

Explanation:

it's the output of plant leaves

Answer:

The correct answer is - D. the bats in Europe and China were healthy.

Explanation:

The white-nose disease of bats is caused by the Pseudogymnoascus destructans or Pd fungus that found in cold mines and caves of the bat. It is a fatal disease that leads to the destruction of the bat population in the United States, in north Calorina the population was dropped up to 99 percent. The bats found in Europe and China with the Pd fungus were healthy and do not cause any fatal disease in the population.

Answer:

i.   Name each of the parts labelled I, II, III, IV and V.

                           {5 marks}

I - Crown / Enamel

II - Dentine

III - Cement / Periodontal membrane

IV - Jaw bone / Root

V - Pulp Cavity

ii   What is the function of each of the parts labelled I and III?

                    {2 marks}

I - Protects teeth from harmful bacteria

-- Enable teeth withstand pressure of chewing

-- Cutting / chewing / protects dentine / protect pulp cavity

III - hold tooth firmly (in socket / Jaw bone)

iii  Which of the labelled parts could be affected by tooth decay?

                                   {1 mark}

V - Pulp cavity

iv  State three ways by which tooth decay may be prevented.

                      {3 marks}

→ avoid using sharp-pointed objects

→ avoid having dry mouth

→ use water containing fluorides to wash teeth / mouth

→ avoid smoking

→ the teeth should be cleaned regularly after each meal / remove food particle from the teeth / flossing

→ wash the mouth vigorously after each meal

→ regular visit to the dentist

→ avoid eating too hot foods

→ avoid eating too much sugary food

→ avoid eating too cold food / taking too cold drinks

Explanation:

Answer:

Un ejemplo de reacciones de fusión son las que tienen lugar en el sol, en las que se produce la fusión de núcleos de hidrógeno para formar helio, liberando en el proceso una gran cantidad de energía en forma de radiación electromagnética, que alcanza la superficie terrestre y que percibimos como luz y calor.

Explanation:

primero:atiende a las clases de tu profesor

segundo:no seas vago

nada mas

Answer:

An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule.

Explanation:

Answer:

The correct answer is -

transcribed (mRNA) - CCC AUG UGU UGG CAC GUC GGA UGA CCC

Translated -   Pro- Meth- Cys-Trp-His-Val-Gly- Stop-Pro  

Explanation:

Transcription and translation are two steps of protein synthesis from a particular DNA sequence from a genome. The DNA segment called gene produces specific amino acid chains to form a polypeptide chain of the protein.

Transcription is the process that produces mRNA molecule from the DNA sequence that is complementary to the nitrogen base present in the sequence. The only Change in the nitrogen sequence that Adenine changes into uracil, thymine to adenine, cytosine to guanine, and guanine to cytosine.

DNA - G G G T A C A C A A C C G T G C A G C C T A C T G G G

mRNA - CCC AUG UGU UGG CAC GUC GGA UGA CCC

Translation on other hand is the process of translating the encoded information in mRNA molecule to amino acids with help of tRNA and ribosomes.

mRNA - CCC AUG UGU UGG CAC GUC GGA UGA CCC

Translated -   Pro- Meth- Cys-Trp-His-Val-Gly- Stop-Pro  

Answer:

First claim '' cats are very smart animal''. Second claim '' cats make bonds with humans''

Answer:

answer is b and c

Explanation:

they have different cells, and chloroplast is only in plant cell