As a star goes through this cycle their _____ changes.

A - luminosity
B - brightness
C - all of these
D - temperature

Answers

Answer 1

Answer:

option C. all of these.

Explanation:

Answer 2

The main sequence period is when a star will experience the majority of its life. Helium is currently being created via nuclear fusion from hydrogen. Thus, option C is correct.

What is a complete cycle of a particular star?

The main sequence phase, which our Sun is in, will be entered by the star if it is large enough to fuse hydrogen atoms into helium.

The mass of a star determines its life span. The life cycle of an object decreases with increasing mass.

The amount of substance present in a star's nebula, the enormous cloud of gas and dust from which it emerged, determines the star's mass.

The temperature and pressure rise when the material compresses, just as they do during formation. The freshly created heat briefly overcomes the effect of gravity, pushing the star's outer layers outward.

Therefore, As a star goes through this cycle their luminosity, brightness, temperature changes.

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Related Questions

Trees that lose their leaves during winter are called
A. Deciduous
B. Fern
C. Herbacious
D. Woody
E. Evergreen

Answers

Answer:

a. deciduous

Explanation:

hope this helps :) have a great day.

If the diploid number of an onion cell is 16, what is its haploid number?

Answers

Answer:

8

Explanation:

The haploid number is always half of the diploid number so half of 16 is 8

Which Protects plant and animal cells from outside agents

Answers

A plasma membrane. The plasma membrane lets certain things into the cell that it needs, but keeps other things out.

Explain, in detail, the difference between a population and a community

Answers

Ecology is a branch of Biology that studies the interrelationships between organisms (plants, animals) and their environment.

The word comes from the Greek word oikos which means "house."

A Population is group of organisms of the SAME species living in the same area at the same time and sharing a common gene pool. This group is potentially able to interbreed with one another.

In ecology, the term Community refers to the populations of animals and plants that live within a specific region under similar environmental conditions. These populations of plants and animals live and interact with one another and their environment. Between Humans, the term Community generally refers to a group of people living in the same locality or sharing some common characteristics (i.e. ethnic, cultural or religious).

Which factor is the strongest internal influence on one’s feelings and behavior regarding drugs?
personal feelings

the behavior of friends


the behavior of admired celebrities


environmental and family stresses

Answers

Answer:

personal feelings

Explanation:

personal feelings

The factor is the strongest internal influence on one’s feelings and behavior regarding drugs is personal feelings.

What does it mean to be influenced internally?

Since they come from you, internal factors are ones that you can influence. Your thoughts and emotions affect internal factors. These might be advantageous or harmful. Positive thoughts will help you make decisions while negative ones will likely hinder you.

Internal factors include aspirations, preferences, moral standards, and perceptions of societal norms. Community members, family, cultural practices, friends, the media, and technology are examples of external influences.

Primary emotions are those that cannot be reduced to more fundamental feelings but can be combined to create other emotions. These include fear, wrath, humiliation, contempt, disgust, guilt, discomfort, interest, surprise, and joy.

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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

I-cell wall

III-chloroplast

IV-vacuole

three structures specific to the plant cell

Some sugar molecules are absorbed from the small intestine into the blood by active transport. Explain why the rate of absorption of these can depend on the concentration of oxygen in the cells lining the small intestine?

Answers

Answer:

Because oxygen is the mediator of active transport.

Explanation:

The greater the oxygen, the greater the active transport, since it requires ATP and this energy currency requires cellular respiration.

A man with blood type A, whose mother was type o, has a child with a woman that has type AB blood. Which blood
types are possible in their children?

Answers

Answer:

Ab a o

Explanation:

A man with blood type A, whose mother was type o, has a child with a woman that has type AB blood. Which blood

types are possible in their children AB, a, O.

What is ABO blood grouping ?

The blood grouping can be defined by the presence of surface antigens in the red blood cell which are  A and B. The gene present on the parent chromosome can determine the blood group.

Blood type A represents to the presence of gene A, and its genotypic expression can be A/A or A/O.

Type B blood group where genotype is represented as B/B or B/O, is due to the presence of a gene containing the B antigen.

AB blood group which is codominant- has one gene for A and another for B, with genotype A/B.

Blood type O is mainly characterized by the absence of surface antigens, behaves like a recessive trait, which only manifests itself in the absence of surface antigens A and B. The genotype is O/O.

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I WILL MARK BRAINLIEST PLEASE HELP!

Answers

The answer is the last one
“Cd”
Hope this helpsss and good luckk on ur examss :)))))

Help pleas due in 25 minutes. this is the 3 time that I have posted this question
In the middle of the night, you are awakened by hunger pains. You proceed to get up and go to the kitchen to have a couple of cookies and a glass of milk. Satisfied you go back to bed content. Explain in detail what tissues, organs, and organ systems are involved in completing that task. Be sure to include how the systems interact. The more detail the better! Start with getting up to get the food and include details on the steps in how the food gets digested.
. Explain in detail

Answers

Answer:

you would use your muscles from your legs and your body to get up from your bed and go to your fridge, your muscular system helps you up by being a structure for the muscles to apply force, you will use arm muscles for getting out cookies and milk. Then you will drink and eat your cookies and milk with your jaw muscle and send it down your esophagus to the intestines for the digestive system to break down your food. Then you will use your legs(muscles) to go back to your bed and sleep. (don't copy this whole thing it is not complete and you must add stuff so it is complete im just giving you an idea or the structure of this essay)

How did the arrival of the green bacteria likely affect the survival of purple bacteria?

Answers

Answer:

Have a wonderful day and I hope this is helpful?

blood enters on the left side of the heart through the_____ and enters the left atrium. Then passes through the_____ to enter the left ventricle 

Answers

Blood enters on the left side of the heart through the pulmonary veins and enters the left atrium. Then passes to the mitral(bicuspid valve) to enter the left ventricle.

Blood is a fluid component of the circulatory system that is very vital for transporting oxygen and nutrients in the body system. It comprises cells suspended in plasma.

The correct answers for the blanks are:

Blank 1: Pulmonary veins

Blank 2: Bicuspid valve

The blanks can be explained as:

The left side of the heart has an atrium that gets the oxygenated blood from the lungs through the pulmonary veins.

Oxygenated blood from the left atrium flows to the left ventricle.

Blood from the left ventricle flows to the aorta that distributes the oxygenated blood to the body parts.

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Plz Help. Number 22.

Answers

Answer:

D, controlled by earths gravity

Explanation:

I think it’s d but I’m not sure

What occurs after cytokinesis is completed?
O The cell begins to replicate its DNA
OThe cell organizes its microtubules
O The cell enters G1
O The cell enters G2
??

Answers

After cytokinesis is completed, the cell enters into G1 Phase.

Helppp Pleaseee Ill give u pointssss

Answers

Answer:

I think it is F.

Explanation:

Answer:

Letter E

Explanation:

Letter F shows a codon, an anticodon is the opposite match for the codon, in this case letter E

GIVING BRAINLIEST POINTS!! Please help meeeeee

Answers

Answer:

if its a standardized test and you don't know click c

Explanation:

the most common answer on standardized tests is c

1. Tell me if this is true or false. If it is false tell me why. "Cereal grains are an excellent
source of complex proteins."

Answers

Answer:

True

Explanation:

The most common cereal grains that are used is wheat, rice, oats, and corn. WHich can all be high in a protein called prolamins, including vitamin D&E, fiber, iron, and other nutrients.

Which molecules does a cell need from food to make these membrane

Answers

Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.

Hope this helps...... Stay  safe and have a Merry Christmas!!!!!!!! :D

Will mark brainliest if you get this right! What is this?

Answers

a black hole?? (if not then welp-)

HELPP PLEASE THIS IS VERY IMPORTANTT: Scientists on a space shuttle mission studying plant growth would probably see that the plants on the space shuttle do not grow in the same direction and pattern as those on Earth. Scientists working in space would MOST LIKELY be studying the effects of which of the following stimuli on plant growth?

A) gravity

B) oxygen

C) radiation

D) temperature

Answers

The correct answer is A.gravity

Heather presented to her class a report about the pancreas. Which statement in Heather’s report was not accurate?

Answers

Answer:

C. The pancreas triggers the development of secondary sex characteristics.

Explanation:

y e s

Andrea divided a group of a species of insect she found in her backyard into two groups based on antenna size. The insects with short antennae produced offspring with short antennae. The insects with long antennae produced offspring with long antennae and short antennae. Which of the following statements is most likely true?
A
The gene for short antennae is recessive and the gene for long antennae is dominant.

B
Length of antennae is random.

C
The gene for short antennae is dominant and the gene for long antennae is recessive.

D
Length of antennae is not a hereditary characteristic.

Answers

Answer:

......mm..............

what is a reproductive strategy?

Answers

Answer:

c

Explanation:

What height in meters must the student climb in order to reach the top of the hill?

Answers

Answer: 256 or 300 sorry if i was incorrect

Explanation:

The student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.

What is the significance of the hill in the ecosystem?

The hill is the highest point on Earth and plays an important role in ecosystems because it can provide a variety of different habitats for plants and animals as well as act as barriers that separate different ecosystems, such as the forest ecosystem present on one side of the hill from the grassland ecosystem present on the other side of the hill, and it is also a depositary of minerals and other resources.

Hence, the student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.

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ILL GIVE BRANILIST PLEASE HELP
What do chemotherapy and radiation have in common?
a. Both affect healthy cells in addition to cancer cells
b. Both use drugs
c. Both use high-energy waves
d. Both affect only cancer cells

Answers

Answer:

I’m not sure if both do the rest but A. is right so ig A.

If a cell has 2% sugar inside of the cell, and is placed into a solution with 12% sugar, in which direction will the water mostly travel?​

Answers

Answer:

outside of the cell do to the concentration gradient

Explanation:

HELP PLS
1st to answer gets brainliest
Why do plants need a transport system?

Why should substances be moved in plants?

Which are the substances that need to be moved?

How does a transport system in a plant function?

Where is food or sugar made in plants?

How do sugar molecules move to different parts of a plant?

Answers

Answer:

The transport of food is necessary because every part of a plant needs food for:

Energy

Building its parts

Maintaining its life

Explanation:

1.- How does photosynthesis contribute to the survival of humans?
2.- Explain the effect cyanobacteria had on the early atmosphere of Earth and the evolution of life?
3.- Suppose chromosomes in skin cells are damaged by ultraviolet radiation. If the damaged gene does not affect the cell cycle, do you think the cell will become cancerous?
4.- How is mitosis involved in the healing of a wound?
5.- How is the cell cycle-related to the growth and maintenance of an organism?
6.- What role does differentiation play in the cell cycle?
7.- Explain the connection between the cell cycle and cancer development?
8.- Must the cell cycle always proceed in the same direction, or is it possible for the cell cycle to proceed in the opposite direction? Explain your reasoning.
9.- Explain how crossing over provides evidence to support the claim that meiosis increases genetic variation.
10.- Why is it important that human gametes have half a set of DNA instead of a full set of DNA?
11.- In what ways is ATP like a fully charged battery?

Answers

Answer: By storing carbon above and below the ground, the trees and plants in forests contribute to the production of oxygen as a byproduct of photosynthesis. ... Photosynthesis provides most of the oxygen that humans and animals breathe.

A clear sign that a subduction zone occurs in the ocean is the existence of a ______________________. *

Answers

Answer:

Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.

Answer #12 Plz 10 pts

Answers

Answer:

3rd one

Explanation:

Cell > Tissue > Stomach > digestive system!

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