What is the definition of galactic center and galaxy cluster ?

Answers

Answer 1

Answer:

The Galactic Center (or Galactic Centre) is the rotational center of the Milky Way galaxy; it is a supermassive black hole of 4.100 ± 0.034 million solar masses, which powers the compact radio source Sagittarius A*.


Related Questions

Describe at least three large - scale detrimental consequences of rising temperatures

Answers

Answer:

En primer lugar hay que decir que en contra de lo que puedan pensar muchas personas, el aumento de las temperaturas es una realidad. De hecho, no hay más que ver algunos datos comparativos para darse cuenta, por ejemplo, de que la temperatura de los polos ha aumentado considerablemente en el último siglo.

En primer lugar y por encima de todo tenemos que tener muy claro que el hábitat está cambiando de una manera abismal por lo que la vida del ser humano en La Tierra cada vez es más complicada. Si a esto le unimos el hecho de que nosotros no somos el único ser vivo cuya vida se complica, podemos concluir que muchas especies no serán capaces de adaptarse a estos cambios por lo que morirán. Un cambio que se puede llevar consigo gran parte de las cosechas que existen a día de hoy.

 

Una serie de consecuencias que lejos de ser catastróficas son más que plausibles. Es cierto que del mismo modo que esta situación se puede dar, no es menos cierto que todavía hay opciones de revertir la situación. La pregunta, sin embargo, es saber si el ser humano está dispuesto a ello.

Explanation:

I’m marking as brainliest! Answer the correct answer !

Answers

Answer: B

Explanation: took the test 3 days ago and teacher went over the correct answer and i got it right hoped this helped :) PS: i think its the same test as mine is the second question . In humans, the first seven pairs of rib bones are connected to the sternum (breastbone) by cartilage. Which of the following statements describes the main reason why cartilage is important in these bone-to-bone connections?

recall what microorganism are​

Answers

Answer:

very very .. tiny tiny tiny organisms

Answer:

a microscopic organism, especially a bacterium, virus, or fungus.

Explanation:

Please answer the questions that have “type here”

Earth science

Answers

Answer:

Earth science or geoscience is the study of the Earth's structure, properties, processes, and four and a half billion years of biotic evolution.  Understanding these phenomena is essential to the maintenance of life on the planet. There are four basic areas of Earth science study:

Geology: Science of the EarthMeteorology: Science of the AtmosphereOceanography: Science of the OceansAstronomy: Science of the Universe

What changes were caused by the breakup of Pangaea?

a) change in climates as landmasses moved closer or further from the equator
b) new oceans formed
c) all of these were changes caused by the break up of Pangaea
d) new mountain ranges formed

Answers

Answer: Option C. All of these things happened

Answer:

A

Explanation:

Greenhouse climate conditions that enveloped the Earth for long periods in the deep past millions of years before humans added their current substantial contribution were caused by the break-up of the supercontinent Pangaea.

The zygote is an example of a
cell in humans.
O A. pluripotent
O B. totipotent
O C. placental
O D. multipotent

Answers

Answer:

I think it it c

Explanation:

if not I'm sorry

The zygote is basically an example of totipotent cell in humans. The correct option is B.

What is totipotent cell?

Cell potency refers to a cell's capacity to distinguish into various types of cells. The greater a cell's potency, the more cell types it can differentiate into.

A totipotent cell is a single cell that, when given the proper motherly assistance, can give rise to a new organism.

A totipotent cell is one that can generate all extraembryonic tissues, as well as all body tissues and the germline.

The term "totipotent" refers to a cell that has the ability to split and produce all differentiated body cells, both embryonic and extraembryonic.

Zygotes and spores are instances of totipotent cells in animals.

Thus, the correct option is B.

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Which of the following best describes the function of the Golgi apparatus within plant and animal cells?
No links please!

Answers

Answer:

The Golgi apparatus

Explanation:

The Golgi apparatus packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.

Use the information gathered in the A Three Point Test Cross animation to answer the question. Genes H and K are linked and are known to be 3.5 m.u. apart on the same chromosome. What is the recombination frequency between H and K

Answers

Answer:

3.5 percent (3.5%)

Explanation:

In genetics, crossing over or 'recombination' refers to the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis I. The map units (m.u.), also known as centimorgans, represent a measure of genetic linkage between genes/loci located on the same chromosome. One map unit (1 m.u.) is equal to a 1 percent chance that two gene/loci (in this case, genes H and K) will be separated during meiosis by recombination. In the example above, it means that among their progeny, 3.5 percent (3.5%) will be recombinant for the two genes (H and K), and 96.5 percent (96.5%) will have the parental combination of these genes.

How do heterotrophs get energy? Explain.

Answers

Answer:

A heterotroph is an organism that eats other organisms.

Explanation:

Heterotrophs get energy by hunting and eating other living organisms.

Hope this helped!!

Which celestial objects are formed mostly of the elements hydrogen and helium?


gas giantsgas giants , ,

rocky planetsrocky planets , ,

asteroidsasteroids , ,

dwarf planets

Answers

with 75% of their mass being hydrogen and 25% helium.

Celestial objects that are formed mostly of the elements hydrogen and helium are gas giants and dwarf planets. Gas giants are large planets, such as Jupiter and Saturn, which are composed primarily of hydrogen and helium.

What is the reason of calling them Jovian planets ?

These planets are also known as Jovian planets, and they are much larger than the terrestrial planets, such as Earth, that are made up of rock and metal. Gas giants have no solid surface and are composed mostly of gas and liquid.

Dwarf planets are smaller than gas giants and are made up of a combination of rock and ice. These objects are too small to be considered full-fledged planets, but they still have characteristics of planets such as an atmosphere, moons, and an orbit around the sun.

Although these objects are composed of different materials than gas giants, they still contain significant amounts of hydrogen and helium. In contrast, rocky planets and asteroids are composed of materials such as rock, metal, and ice. Rocky planets, such as Earth, are composed mostly of iron, silicon, magnesium, and other elements

Hence, . Asteroids are small, rocky objects that are found in the asteroid belt between Mars and Jupiter. These objects are composed of rock, metal, and ice, and contain very little hydrogen and helium.

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A student claims that the King penguin and Emperor penguin are more closely related to each other. Which of the following evidence would support that? (select all that apply)

Question 2 options:

The penguins are geographically close to each other


The penguins have similar amino acid sequences for Cytochrome B


The penguins look somewhat like each other


The penguin names have a similar theme

Answers

Answer:

The penguins are geographically close to each other

The penguins have similar amino acid sequences for Cytochrome B

The penguins look somewhat like each other

Explanation:

Both King penguin and Emperor penguin are closely related to each other because both lives on the same geographical location which is Antarctica. Both King penguin and Emperor penguin have  similar amino acid sequences for Cytochrome B due to belongs from the common ancestor. Both King penguin and Emperor penguin have similar appearance and look very similar to each other with some differences in their shape which make them different species.

HELPPPP!!!!!! AG CLASS
Complete the following sentence.

In topiary, the design element of a plant’s natural ____________ has been altered through pruning, trimming, and binding to develop a new and alien shape.

Answers

Answer:

form

Explanation:

EDGE 2021

Answer:

form

Explanation:

. A researcher studies the evolutionary relationships between influenza viruses by comparing the genomic sequences of the viruses found in pigs, ducks, and humans in a given year. When evaluating the viruses that had infected these hosts the previous year, she identifies a cross-species transfer from humans to pigs. This information supports the hypothesis that cross-species transfer leads to more severe disease if during the previous year _______ suffered a severe influenza pandemic.

Answers

Answer:

pigs

Explanation:

Influenza is an infectious disease caused by influenza viruses, which can be divided into four types A, B, C and D. In humans, influenza A and B viruses are known to cause epidemics, while A viruses are known to cause pandemics. Influenza viruses are also found in birds and mammals (e.g., dogs, cats,  cattle pigs and horses). Cross-species virus transmission refers to the transmission process of infectious viruses between hosts from different species. Several viruses that may cause severe diseases in humans have originated from animal species, e.g., avian influenza A virus that can be transmitted to humans through an intermediate host (e.g., pigs). Other examples of cross-species virus transmission include the Ebola virus and Hantaviruses. It has been suggested that cross-species transmission is a common phenomenon in rapidly evolving viruses.

Please answer the questions that have “type here”
Earth science

Answers

Answer:

#4 - the lower the pressure the higher the altitude

#12- Light from the Sun passes through the glass roof to heat plants and the ground inside the greenhouse. These objects then emit infrared radiation, which is absorbed in the glass roof. Thermal energy is trapped in the greenhouse, keeping the building warm.

#13 - acid rain

#14- 10 and 25

#15- clouds, weather, etc

Explanation:

I had to find and watch the video to fill out the ones you put "type here". Hope my answers help you. And pls give me a Brainliest. Thank you.

1. What is the main cause of cancer?

Answers

A number of forces can cause gene mutations, such as smoking, radiation, viruses, cancer-causing chemicals (carcinogens), obesity, hormones, chronic inflammation and a lack of exercise.
Smoking viruses and diseases

12. Scientists discover a new species of mouse and want to classily it accurately,
A. organism cloning
B. genome sequencing
C. gene therapy
D. DNA fingerprinting

Answers

Answer:

A

Explanation:

Answer:

A

Explanation:

Summary:Scientists have discovered two new species of 'stilt mice,' semi-aquatic African rodents with extra-long feet that they stand up on like a kangaroo. The mice wade in streams and dip their whiskers onto the water's surface to detect bugs to eat. The researchers also helped clarify these rodents' family tree, which includes a genus that's only ever been collected once, 93 years ago


_________ is a disease where patients cannot control their blood glucose levels

Answers

Answer:

Causes of type 1 diabetes: This is an immune system disease. Your body attacks and destroys insulin-producing cells in your pancreas. Without insulin to allow glucose to enter your cells, glucose builds up in your bloodstream. Genes may also play a role in some patients.

Explanation:

hope it helps

:D


Which cell structures are found in plant, animal and bacterial cells?​

Answers

I think its the ribosome and the vacuole, as the two features are found in those 3 types of cells. Let me know if im mistaken!

1) Identify 4 stimuli that cause a decrease in the number of producers, consumers, and decomposers living in an area.
2) What could be the effects in relation to the energy pyramid, population, and community of organisms within the environment.

Answers

Answer:

Temperature, humidity, food and water.

Explanation:

Temperature, humidity, food and water are the four stimuli that is responsible for the decrease in the population of producers, consumers, and decomposers living in that area. If the temperature is too high or too cold, the growth of the producer stops and the plants can't tolerate the temperature will die. The death of producers causes the death of consumers  because consumers depend on these producers for food. The population of decomposer also decreases if the environment is too harsh because decomposers also requires suitable environment for growth and survival. There is adverse effect on the energy pyramid, population, and community of organisms within the environment if these stimuli are not present in suitable range.

help..................................................

Answers

Option F. It is moist and cool with decaying debris.

Answer:

F. It is moist and cool with decaying debris.

Explanation:

I know this because an earth room always needs their supplement from the dirt in order to stay moist and wet during any weather.

How does the conservation of matter relate to the process of digestion?

Answers

Answer: According to the the law of Conservation of Matter, matter is neither created nor destroyed. ... When matter changes from one form to another, e.g., a portion of beef steak (beef protein) is eaten and digested, the macro-structure of the beef is broken by our digestive enzymes into its component amino acids.

Explanation:

Genetic Variation:Question 8
The process of meiosis results in four nuclei, each of which is
haploid and has a single set of unreplicated chromosomes. The
genetic composition of each single set of chromosomes differs from
the other sets of chromosomes due to the?

Answers

Answer: Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes. The overall process of meiosis produces four daughter cells from one single parent cell.

Explanation:

During meiosis, homologous chromosomes (1 from each parent) pair along their lengths. The chromosomes cross over at points called chiasma. At each chiasma, the chromosomes break and rejoin, trading some of their genes. This recombination results in genetic variation.

Please help!!!!!!!!!!!!!!!!!!!!

Answers

Answer: 4. Cytokinesis. 5. Metaphase. 6. meiosis II. 7. metaphase.

Explanation:

Some ocean plants, such as photosynthetic algae, benefit when dissolved CO2 levels in ocean water are elevated. Complete the
chemical equation by dragging and dropping components of the equation into the boxes that BEST explains how algae use CO2 for
photosynthesis

Answers

Answer:

CO2 + H2O ---SUNLIGHT--------> C6H12O6 + O2

Explanation:

In the process of photosynthesis, carbondioxide reacts with water molecules in the presence of sunlight forming glucose molecules and oxygen gas. The carbondioxide enters the plant body through small openings called stomata, these stomata opens when there is sunlight whereas water enters the plant body through roots from the soil and reaches to the leaves. In leaves both combine produces glucose which can be stored in different parts of the body and some oxygen is used by the plants in the process of respiration and extra is released through stomata.

Match the type of metamorphism to its cause. Impact ? Heat Contact ? Directed pressure Dynamic ? Meteorite Regional ? Surrounding pressure SUBMIT​

Answers

Answer:

Contact Metamorphism - Heat

The heat is the main cause, cooling magma affects the rock adjacent to an intrusive body.

Dynamic Metamorphism - directed pressure

It takes place due to grinding two large blocks of rock in a fault zone which causes a directed pressure that leads to heat and the formation of these metamorphisms.

Regional - surrounding pressure

A heat and lithostatic pressure come from depth within the earth.

Impact - Meteorite

By collision of meteorite to earth very high amount of kinetic energy is converted instantaneously to heat and differential stress.

Muscle Name Adjacent Bones Adjacent Muscles
Deltoid
Biceps brachii
Triceps brachii
External oblique
Gastrocnemius
Quadriceps femoris

Answers

What’s the question here, what do you want me to answer?

1. Deltoid: The deltoid muscle is located in the shoulder region. It attaches to the scapula (shoulder blade), clavicle (collarbone), and humerus (upper arm bone).

It works in conjunction with the trapezius and rotator cuff muscles to facilitate shoulder movements and stability.

2. Biceps brachii: The biceps brachii is a muscle in the upper arm. It attaches to the radius (one of the forearm bones) and the humerus. The brachialis and brachioradialis are adjacent muscles that also contribute to forearm and elbow movements.

3. Triceps brachii: The triceps brachii is located at the back of the upper arm. It attaches to the humerus and ulna (one of the forearm bones). The anconeus and brachialis are adjacent muscles that assist in elbow movements.

4. External oblique: The external oblique is one of the abdominal muscles. It attaches to the ribs and the iliac crest, which is part of the hip bone. It works in conjunction with the internal oblique and rectus abdominis muscles to provide trunk rotation and lateral flexion.

5. Gastrocnemius: The gastrocnemius muscle is situated in the calf region of the leg. It attaches to the femur (thigh bone) and the calcaneus (heel bone).

It forms the prominent part of the calf and works with the soleus and plantaris muscles to flex the foot and assist in movements like walking, running, and jumping.

6. Quadriceps femoris: The quadriceps femoris is a group of muscles in the front of the thigh. It attaches to the femur, patella (kneecap), and tibia (shin bone).

The hamstrings (biceps femoris, semitendinosus, semimembranosus) and sartorius are adjacent muscles that have an antagonistic relationship with the quadriceps, helping to flex the knee and extend the hip.

These muscle names, along with their adjacent bones and adjacent muscles, provide a basic understanding of their anatomical relationships and functional roles in the body.

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Is there a relationship between the environment & what an animal looks like?

Answers

Yes there is a relationship w the animal and the environment

In your opinion, how does the pancreas regulate the exact amount of glucose to be absorbed into its
target organs through the secretion of insulin?

Answers

Insulin helps the cells absorb glucose, reducing blood sugar and providing the cells with glucose for energy. When blood sugar levels are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored glucose, which causes blood sugar to rise.

Stem cells undergo a process known as differentiation in order to become specialized. Specialized cells do not revert back into their undifferentiated form once they have matured. Nucleic acids play a role in the process of differentiation. Which statements describe the relationship between nucleic acids and differentiation? Select ALL that apply.
A) Genes within the genome tend to remain inactivated until their gene products are needed.
B) Once they are differentiated, cells contain additional DNA that programs the cells to be specialized.
C) All cells in an organism, whether differentiated of not, contain a complete genome with the exact same genes. Hindi
D) Stem cells remove part of their genome once they are differentiated so that unnecessary genes cannot be expressed.
E) Transcription factors are present in certain cells that cause specific genes to be transcribed in differentiated cells.​

Answers

A

C

E

(Trust me)

Explanation:

The differentiated cell has specific transcription factors that are present in the cell and cause specific genes to be transcribed. Option E is the correct answer.

What is cell specification?

Cell specification is the process by which a cell determines its fate. After specification, a cell's gene pattern changes. Some genes that are present in euchromatin regions are expressed, and as a result, this cell expresses specific proteins and RNA.

After the zygote is formed, it undergoes a cleavage process to form multiple cells by mitosis. The cells then specify and receive their fate, such as some converting into nervous cells, others into epithelial cells, and still others into blood cells.

This change in structure and function is due to the expression of special genes in DNA. Though all cells have the same genetic content, some genes are present in euchromatin regions and some genes are present in heterochromatin regions. Genes of euchromatin are expressed.

Hence, option E is the correct answer, as the cell produced specific transcription factors.

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Earthworms help farmers. Many farmers add them to their farmland because they help form rich soil to grow crops in.

Earthworms mix different layers of soil together by carrying humus from the surface down into the subsoil. Humus is a dark-colored substance made up of a variety of materials. Which two of the following are found in humus? NO LINKS OR WILL BE REPORTED ⚠

Answers

Answer:

I think it's A and D

Explanation:

I hope this is right ;)

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An external conflict exists when a character struggles against some outside force.Group of answer choicesFalseTrueJUST SAY TRUE OR FALSE Help thsisss thoooooooo A jar contains 4 blue marbles, 6 red marbles, 10 purplemarbles, and 5 green marbles. If you choose one marble,what is the probability that it WON'T be green?A20/25B10/255/25D15/25 In 2 paragraphs, answer the following questions (be sure to give examples)What Chinese philosophy do you think is best for society? Why?What Chinese philosophy do you think is worse for society? Why?What Chinese philosophy do you think is best for a classroom? Explain.no files please :-) ano ang paska o tema ng Sarah ang munting prinsesa If 20.00 mL of a 0.0090 M solution of (NH4)2S is mixed with 120.00 mL of a0.0082 M solution of Al(NO3)3, does a precipitate form? The Ksp of Al2S3 is2.00*10^-7. Included calculated ion product in answer. Can somebody please help me? The bar graph shows a companys income and expenses over the last 5 years. Which statement is supported by the information in the graph?A) The income in Year 5 was twice the income in Year 1B) The combined expenses in Years 3 and 4 were more than the combined income in Years 3 and 4C) Expenses have increased each year over the last 5 yearsD) The combined income in Years 1, 2, and 3 was equal to the combined expenses in Years 1, 2, and 3 Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!! some questions to ask to find history of our village how personality affect on performance of company I just need help graphing! (4x - 20) I really need help on this The reciprocal rule of division method isA.Multiply the divisor by the reciprocal of the dividendB. Multiply the dividend by the reciprocal of the divisorC. Both A and BD. None of these You roll a dice. It is an even number. What is P(6/Even)?A) 1/3B) 1/6C) 5/6 Megan is the manager of a computer shop she organises a sale with 18% off all tables Megan changes the price of own table from 389 to 330.98 has Megan changed the price probably What are some other ideas that you think Japan could use to help with their overcrowdingproblem? (In the ring of fire) plz help im lazy plzzzzzzzzzzz Which letter in the image shows the alluvial fan Why should I join a health science Academy