Stars are composed primarily of which elements?

Stars Are Composed Primarily Of Which Elements?

Answers

Answer 1

Answer:

hydrogen and helium

Explanation:

Answer 2
Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements

Related Questions

how long does it take for a body to decompose underwater

Answers

Answer:

Even a weighted body will normally float to the surface after three or four days, exposing it to sea birds and buffeting from the waves. Putrefaction and scavenging creatures will dismember the corpse in a week or two and the bones will sink to the seabed.

Explanation:

Hope it helps!!

Answer:

According to the Australian Museum, in the summer, a body can completely decompose in as little as nine days.

Explanation:

what is the primary function of cellular respiration?

Answers

Answer:

Cellular respiration releases stored energy in glucose molecules and converts it into a form of energy that can be used by cells. Hope i helped

PLZ ANSWER IN OWN WORDS Why do the bone structures around your head and chest create a convex, enclosed area, unlike the bones in your arms and legs?

Answers

Answer:

Bones have different shapes depending on their structure. In the case of the head and the chest, these flat bones protect organs such as the brain and the heart. On the other hand, long bones support the body's movement.

3. Which property of water is the result of hydrogen bonds?

Answers

Answer:

Water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely.

Answer:

"Water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy."

Explanation:

https://courses.lumenlearning.com/boundless-biology/chapter/water/

How to make bacteria as a treatment for sewage waste

Answers

Answer: Bacteria break down organic material in wastewater and form the floc that settles and separates solids from liquids. Controlling F/M ratio–a vital component to creating a favorable environment for wastewater bacteria–can be accomplished through the use of bioremediation products. Bacteria account for 95% of the microorganisms in wastewater. They are single-celled microorganisms that are classified based on their response to oxygen.

Aerobic bacteria use oxygen, which is added mechanically, to break down wastewater contaminants, converting it into energy. Bacteria use this energy to grow and reproduce. Anaerobic bacteria obtain oxygen from their food source. As anaerobic bacteria break down sludge, they produce methane gas. This methane gas can be used as an alternative energy source, called biogas, to fuel the wastewater treatment process. Anaerobic bacteria can also be used to lower the amount of phosphorus in the effluent. Although they prefer oxygen, facultative bacteria can switch between aerobic and anaerobic forms in response to their environment.

what is the relationship between recombination frequency and the physical distance between genes on chromosomes?

Answers

Answer:

Recombination frequency (genetic distance) is determined by the frequency of the recombination events between the two genes in meiosis. The greater the physical distance between the two genes, the more likely are they to recombine during any given meiosis event.

Explanation:

so its a answer

how long does it take for a body to start decomposing

Answers

Answer:

24-72 hours after death

Explanation:

Hope this helps!

Each X shows the location of an archer's arrow on a bull's-eye target. The archer was aiming for the center circle. X xx X x x Which words best describe the archer's results?​

Answers

Low precision and low accuracy best describe the archer's results. So the correct option is A.

Who is an archer?

Archery is a sport that involves firing arrows with a bow at inanimate objects or animals during a hunt.

With the exception of Australia, the bow has been a primary tool of combat and the hunt from prehistoric times.

Ancient Egyptians and Greeks also engaged in recreational archery in addition to military archery, an example of the latter being the contest in which Odysseus triumphed and gained Penelope's hand.

Large portions of Asia were ruled by horse-mounted archers such as the Huns, Seljuq Turks, Mongols, and others for around 15 centuries beginning in the first century CE.

During the Hundred Years' War (1337–1453), English longbowmen earned magnificent military successes, while the crossbow gained popularity throughout continental Europe, particularly in Switzerland, some regions of Germany, France, and the Low Countries.

Therefore the correct option is A.

Read more about archery, here

https://brainly.com/question/11015979

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what happens before RNA polymerase begins to work

Answers

Answer:

D. Nucleic acids attach to the bases in the DNA.

Explanation:

Transcription begins when an enzyme called RNA polymerase is added to the DNA template and begins a new chain a new chain to produce complementary RNA. During the RNA synthesis transcription takes place, then the cap and tail is added and then splicing occurs. RNA polymerase moves from the 3 'end to the template strand creating the RNA-DNA double helix or similar the base sequences. This makes a chain with each sugar by the set of bonds called phosphodiaster linkage. Then, the enzyme unwind the DNA and begins the synthesis of RNA. Therefore, D. Nucleic acids attach to the bases in the DNA.

can 2 organisms live in the same ecosystem and not compete with each other? Explain

Answers

Answer:

The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Explanation:

Answer:

The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Explanation:

The table below shows some of the ingredients in the four different drinks. Which of these drinks would give an athlete the most energy we litre

Answers

Answer: 2

Explanation: the numbers add up to make the highest number

Select all the correct answers.
Which two body systems interact to expel the waste product carbon dioxide?

1) urinary system
2) nervous system
3) excretory system
4) circulatory system

Answers

Answer:

circulatory system is the answer

Circulatory system and Excretory system

Can someone please help me

Answers

Answer:

Q.No1 is the answer

substitution

Which of the following best describes consumer opinion about the use of biotechnology in agriculture? possible answers are,

a. agreeable

b. indifferent

c. skeptical

d. opposed

Answers

Answer:

They are skeptical

Explanation:

"There is also the consumer viewpoint to consider: Consumers are increasingly leery of biotechnological techniques and the use of drugs such as antibiotics and growth hormones to increase production because there is a fear that these chemicals are passed on in the meat, milk, or eggs of the animal."

Which TWO processes involve the flow of solar energy through the earth system?


Possible answers;


The Cooling of Earths surface

The evaporation of water

The growth of green plants

The heating of Earths core

Answers

The cooling of earth’s surface and the heating of earths core

how does an electron transport chain lead to the generation of atp in the light-dependent reactions of photosynthesis?

Answers

Answer: How does an electron transport chain lead to the generation of ATP in the light-dependent reactions of photosynthesis? ... The electron transport chain directly absorbs light energy and transforms it into the chemical energy of ATP.

Explanation:

a typical eukaryotic cell has enough available atp to meet its needs for about 30 seconds. what is likely to happen to an individual when they exhaust their atp supply?

Answers

Eukaryotic cells rely on the molecular energy of ATP to sustain all of the reactions necessary to maintain life, in the absence of ATP, these reactions would come to a halt, and the cell would inevitably die.

ATP is a molecular compound that provides the energy needed by most cells to survive. ATP represents Adenosine triphosphate, which is an organic compound that provides energy to drive the essential metabolic reactions of living cells, such as:

Muscle contractionsNerve impulsesChemical synthesisNutrient absorbtion

In the situation in which a cell was to run out of ATP, these reactions would stop, given that they require ATP to function. This means that the cell would not be able to send or receive nerve signals, absorb the nutrients it needs, or even create necessary compounds such as proteins. The stoppage of these functions would lead to the death of the cell.

To learn more visit:

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10. What 5 traits do the bird and its closest relative share?

Answers

Answer:

EGGS WITH SHELL

AMNIOTIC EGG

FOUR LIMBS

BONY SKELETON

VERTEBRAE

Explanation:

The five traits that the birds and their close relatives share are given below:

Amniotic eggVertebraeLimb development (four)Bony skeleton and feather arrangements.Egg with envelope (shell).

What do you mean by traits?

Traits may be defined as a state of a character, which is a distinct variation of a phenotypic characteristic of an organism.

Every organism shows some common as well as distinct traits as compared to its close relatives. This represents the evolutionary analysis of organisms in a phylogenetic tree.

Therefore, above are the five traits that the birds and their close relatives share.

To learn more about Birds and their close relatives, refer to the link:

https://brainly.com/question/1356491

20. Which element would be found in Period 5, Group 6?
А. Та
B. Mo
C. W
D. Nb

Answers

Answer:

A.

hope it helps

im from philippines.

The everglades have remained unchanged throughout the last 100 years?
A.True
B.False

Answers

Answer: The Answer is a. True

Explanation:

Answer:

true

Explanation:

kwj owner w bisbsi. sodb.

which system is responsible for triggering the physiological effects of the stress response?

Answers

Answer:

sympathetic nervous system

Explanation:

The sympathetic nervous system functions like a gas pedal in a car. It triggers the fight-or-flight response, providing the body with a burst of energy so that it can respond to perceived dangers.

Answer: the answer is endocrine system

Explanation:

What type of diffusion is aided with a transport protein?
a. Osmosis
b. Permeated diffusion
c. Facilitated diffusion
d. Osmotic diffusion

Answers

Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane. Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient.

ILL MARK BRAINLIEST!Geothermal energy is possible where there is….

A.wind
B.boil
C.coal
D.magma

Answers

Answer:

D. Magma

Explanation:

geothermal basically means they're pulling energy from the beneath the earth's trying to get heat to convert, and magma is hot, so i would assume that D would be the best answer

PLZZZZZZZ HELP

write your own description of what the sliding filament theory states.

Answers

Answer:

The sliding filament theory is the explanation for how muscles contract to produce force. As we have mentioned on previous pages, the actin and myosin filaments within the sarcomeres of muscle fibres bind to create cross-bridges and slide past one another, creating a contraction.

Explanation:

this answer is helpful

1. Why do most enzymes have Km values the same or similar to the concentration of their substrates This is necessary for cooperative enzymes All answers are correct (except none) Allows the enzyme to function at Vmax None of these answers are correct Allows Vo to respond to changes in substrate concentration

Answers

Answer:

c

Explanation:

HELP ASAP SHOW YOUR WORK AND EXPLAIN HOW YOU GOT YOUR ANSWER-NO LINKS OR JOKING AROUND

Compare the structures of viruses and cells.

Answers

Answer:

Cells have a double stranded DNA molecule and many strands of single stranded RNA as the copies. Viruses, however, can have double stranded DNA, single stranded DNA, double stranded RNA, or single stranded RNA. They convert RNA to DNA and then back to RNA to make proteins, which does not happen inside cells.

Which climate zone generally receives the least amount of the
sun's energy?
a) tropical zone
b) subtropical zone
c) temperate zone
d) subpolar zone
What are climate zones?

Answers

Answer:

d) subpolar zone

What do climate zones mean?

A climate zone is a world area or region distinguished from a neighbor by a major physical climatic characteristic that is of global scale.

pepsinogen, an inactive digestive enzyme, is secreted by the ________.

Answers

Answer:

It’s secreted by stomach cells called chief cells.

Explanation:

it’s quickly activated by hydrochloric acid to become pepsin. Pepsin is the active form of pepsinogen and it breaks down or metabolizes protein into smaller building blocks called amino acids and peptide fragments.

how does frshwater ecosystems help with flood conrol

Answers

Answer: In terrestrial ecosystems the presence of vegetation in floodplains and watersheds can reduce the occurrence and severity of flooding by slowing water flows, enhancing percolation and storage, and allowing gradual release of water, thereby maintaining base flows and reducing peak flows.

Explanation:

A woman standing and watching the stars on a cool, calm night will lose most of her body heat by _____.

Answers

Answer: Not moving in the cool weather

Hope this helps. I think it would be by the woman not moving whilst being in the cold weather, good luck
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