Which of the following happens during the main-sequence stage of a star's life?
It cycles, appearing brighter and dimmer in turns.
It changes the color that it emits.
It increases its distance from the Sun.
It grows continuously smaller and dimmer.
During the main sequence stage of the life cycle of a star, it cycles, appearing brighter and dimmer in turns.
What is the life cycle of a star?The life cycle of a star is a cycle which describes the time from the birth or formation of the star, through its growth and expansion, and then finally the death of the star.
The life cycle of a star occurs in seven stages and occurs over billions of years.
One of the stages is the main sequence stage.
During the main sequence stage of a star's life, it cycles, appearing brighter and dimmer in turns.
Therefore, the life cycle of a star is a cycle from the birth to death of the star.
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A student investigates the effects of fertilizer on corn plants by performing the following steps: 1. Plant groups of corn plants in the same type and amount of soil in full sunlight. 2. Add the same amount of different brands of fertilizer to each group. 3. Water the plants for 5 minutes each day. 4. Measure the heights of the plants each day. What is the independent variable in this investigation?
I think the answer would either be the different brands of fertilizer
What is the first stage of the nuclear fuel cycle? WILL GIVE BRAINLY AND 22 POINTS Fuel production Uranium mining Reprocessing Disposal
Answer is uranium mining.
Answer:
THE NUCLEAR FUEL CYCLE STARTS AS THE MINING OF URANIUM.IT THEN ENDS AT DISPOSAL OF NUCLEAR WASTE.WITH THE PROCESSES I NG OF USED FUELS AS AN OPTION FOR NUCLEAR ENERGY
What is the meaning in life it seems so pointless??
Answer:
To be happy
Explanation:
Honestly If you are happy then life is good, what do you crave in life... go after it
Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected?
Answer:
The enzyme would be deactivated.
Explanation:
Enzymes are usually deactivated by low temperatures.
Enzymes are proteinous in nature, function by catalyzing biological reactions, and have a particular range of temperatures where they function optimally. Above these temperatures, the catalyzing attribute of enzymes gradually declines till they are denatured by high temperature and below the optimal temperature, their catalyzing attributes also decline. However, instead of being denatured by very low temperatures, they become deactivated instead.
In the periodic table, periods are_____rows.
Answer:
It's a row of chemical elements
Answer:
The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.
Explanation:
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If viruses are not living, how do they cause disease?
Answer:
In an episode of the classic 1950s television comedy The Honeymooners, Brooklyn bus driver Ralph Kramden loudly explains to his wife, Alice, “You know that I know how easy you get the virus.” Half a century ago even regular folks like the Kramdens had some knowledge of viruses—as microscopic bringers of disease. Yet it is almost certain that they did not know exactly what a virus was. They were, and are, not alone.
Explanation:
its in the answer
Which statement about lunar eclipses is false?
Select one:
a. They occur at least twice a year.
b. They cause the moon to disappear completely.
c. They can be seen from any place with a view of the moon.
d. They may last for hours.
Answer:
B
Explanation:
The moon won't completely disappear, but it will be cast in an eerie darkness the makes it easy to miss if you were not looking for the eclipse.
Write the balanced equation for cellular respiration. Include the common names of
each compound
Answer:
C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
Explanation:
All materials,weather solid,liquid or gas are made of?
They are all made of atoms!
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what caused the movement of ocean currents?
Answer:
The heating up and cooling down of water. The winds also have effects
Explanation:
How does an organisms life begin?
Answer:
Living organisms undergo growth and development. Every living organism begins life as a single cell.
Answer:
The life of an animal organism, obviously, begins at conception. But human life begins only at the moment that the animal has a mind. In some, very fast, developers this can happen before the age of one year; in a large majority of cases this happens between two and three years of age.
Explanation:
the building block (monomers) of dna are?
Answer:
nucleotides are the monomers of dna
What charge do the hydrogen atoms have in a molecule of water?
Answer:
Positive Charge
Hydrogen Atoms has Positive Charge because the electrons spend more time in the Oxygen than the Hydrogens.
Need help with this emt class it hard pls smart people only
Answer:
Coast Guard
Explanation:
A population is growing at a rate of 2, 4, 8, 16, 32. Which type of growth does this describe? linear logistic exponential negative
A population that is growing at a rate of 2, 4, 8, 16, 32 shows a type of growth known as exponential growth.
What is exponential growth?Exponential growth is a type of growth where quantity is increased in an order of magnitude for a given period of time.
In biology, exponential growth is seen in populations having sudden expansions.In conclusion, a population that is growing at a rate of 2, 4, 8, 16, 32 shows a type of growth known as exponential growth.
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What happened to the compasses when a current flowed through the wire?
1.Explain what is happening to the movent of water?
2.what happens to the size of the cell?
How might the layers found in sedimentary rock help scientists learn more
about dinosaurs and other extinct species?
Answer:
Layers found in sedimentary rock could help scientists learn more about dinosaurs and other extinct species because each rock layer can be used to time date. The "oldest" being at the bottom and "newest" at the top. A scientist would also be able to tell which organisms lived together by looking at these layers
Explanation:
11. In which of the following examples will water move into the cells of the large intestine from the outside environment by the process of osmosis?
Osmosis occurs in the large intestine to transfer water from the feces into the neighboring cells.
What is the process of osmosis?Water is transported across cell membranes through diffusion and osmosis. The body reabsorbs absorbable solutes and electrolytes from meals (namely salt, potassium, and chloride ions).
The total solute concentrations and the permeabilities of the solutes in relation to water define the effective osmolality of a biological fluid, the large intestine to transfer water from the feces into the neighboring cells.
Water molecules move by osmosis across the cell membrane from a lower solute concentration to a higher solute concentration.
Therefore, osmosis, a kind of diffusion, is how water enters and exits the cell's large intestine to transfer water from the feces.
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When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity? cell organism organ system tissue
Answer:
Tissue.
Explanation:
Cells work together to make tissues and tissues work together to make organs. I believe tissues are right under organs in terms of complexity.
The level of organization is defined by the simple to complex arrangement. The tissues are below the organs in the level of complexity. Thus, option d is correct.
What is the level of organization?The arrangement of the most simple to the complex structure in a hierarchical manner is called the level of organization. It makes the population and the community of the ecosystem.
The atom is the most simple level that aggregates to form a molecule that makes a cell. Cells with similar functions make the tissues. The tissues with various fucntions combine to form an organ.
An organ along with different organs makes an organ system. The various organ system with various roles and activities makes the organism. Many organisms make a population that results in a community, ecosystem, and biosphere.
Therefore, option d. the tissues make the organs.
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PLS HELP A student has four snails, four sprigs of Elodea, eight test tubes of bromothymol blue, and two rooms (light and dark). The student wants to know what gases are produced by the snails and Elodea in light and dark conditions. Assuming the student only has time for one experiment, what setup will yield the most complete data? All test tubes contain bromothymol blue. Experiment 1: Light room with test tubes A to D. A contains 1 snail. B contains Elodea. C is empty. D contains 1 snail and Elodea. Dark room with test tubes E to H. E contains 1 snail. F contains Elodea. G is empty. H contains 1 snail and Elodea. Experiment 2: Light room with test tubes A to D. Each test tube contains 1 snail. Dark room with test tubes E to H. Each test tube contains Elodea. Experiment 3: Light room with test tubes A to D. Each test tube contains 1 snail and Elodea. Dark room with test tubes E to H. Each test tube is empty. Experiment 4: Light room with test tubes A to D. A contains 2 snails and Elodea. B contains 1 snail. C and D are empty. Dark room with test tubes E to H. E contains Elodea. F contains 1 snail and Elodea. G and H are empty. a. Experiment 1 b. Experiment 2 c. Experiment 3 d. Experiment 4
Answer:
Its A Experiment 1
Explanation:
a friend believes that studying the genetics of dead organisms offers little benefit to modern day humans do you agree with this statement to use information from the article to support your argument.
Studying the genetic ancestry of humans can help explain why some people have a higher or lower risk of certain diseases. Finding the genes related to certain diseases will help fuel new drugs and therapies. For example, the article explains that people with six copies of CLPS genes seem to have a lower risk of diabetes
Explanation:
According to me, the process of studying the genetics of dead organisms offers significant benefits to modern-day humans.
What is Genetics?Genetics may be defined as the branch of biology that deals with the study of heredity and variations that are remarkably controlled by genes.
The genetics of dead organisms reveals the process and methodology of past organisms. It illustrates how the differences in present organisms lead to the process of evolution.
It compares the physiology, psychology, genomic sequencing, alterations in the genetic arrangements, etc. It also allows us to understand new facts and changes that fascinate evolutionary questions.
Apart from this, modern technology makes the study of dead organisms more effective and significant with numerous benefits like recombinant DNA technology, DNA analysis, isolation, etc.
Therefore, the process of studying the genetics of dead organisms offers significant benefits to modern-day humans.
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If an object is having a constant positive acceleration, what can we assume about the forces on it?
Answer:
If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. ... If however, the forces are balanced (in equilibrium) and there is no net force, the object will not accelerate and the velocity will remain constant.
The force on the object is unbalanced.
Acceleration is the change in velocity per change in time of motion.
At constant velocity, the acceleration of an object will be zero.Increase in the change of velocity causes increase in acceleration in positive direction.A positive acceleration indicates increase in the motion of an object.According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.
F = ma
If the net force on an object is balanced, the acceleration of the object will be zero because the object will move at velocityHowever, if the force on an object is unbalanced, the object will accelerate.
Thus, we can conclude that the force on the object is unbalanced.
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While observing slides under a microscope, Jack adjusts the microscope's mirror so that a circle of light can be seen. Which microscope is in use?
A.
Compound microscope
B.
Electron microscope
C.
Scanning electron microscope
Answer: A compound or light microscope
Explanation:
Bacteria are surrounded by?
Answer:
Structurally, a typical bacterium usually consists of (1) a cytoplasmic membrane surrounded by a peptidoglycan cell wall and maybe an outer membrane, (2) a fluid cytoplasm containing a nuclear region (nucleoid) and numerous ribosomes; and (3) often various external structures such as a glycocalyx, flagella, and pili.
Explanation:
Which of the following has no membrane-bound organelles and can reproduce asexually?
А
eukaryote
B
yeast
С
prokaryote
D
algae
If we mixed sodium and iron
then the result will be?
Answer:
u can't mix them
two solid metals can't form solution.
Sodium hydroxide and iron when it reacts with water the result will be tetrahydroxoferrate
Similarities in animal and plant kingdom
Micheal wants to test the effect of stomach acid concentration on the solubility of a particular oral medication. Which experiment design setup would best help him answer his question?
Answer:
Prepare solutions of different acid concentrations, measure 50 milliliters of each into different beakers, and place the same type of medication of the same mass into the beaker
Explanation:
The experiment to test the effect of stomach acid concentration on the solubility of a particular oral medication will have the following configuration;
The independent variable = The concentration of the acid to which the medication is added
The dependent variable = The solubility of the medication in the acid concentration
The constant = The medication which is added to the acid concentration
The controls = The fixed mass and type of the particular medication and fixed volume of the different concentrations of the acid samples.