Which is NOT true about ALL stars?
All stars are mostly composed of hydrogen
O All stars spend some of their lives as main sequence stars
All stars produce white dwarfs
All stars become giants when they run out of hydrogen

Answers

Answer 1

Answer:

All starts become giants when they run out of hydrogen. this information is false.


Related Questions

Differentiate between Carnivores and herbivores animals ? Give 2 examples.

Answers

carnivors eat meat herbivores eat plants and herbivores have smaller teeth because they don't chew meat

Answer:

carnivores eat only meat and herbivores only greens meaning grass, tress, lettuce, etc

Explanation:

You are in an area near the shore of a pond with many grasses and no trees. You are in a ____________________.
a.
tundra
c.
forest
b.
marsh
d.
savanna

Answers

i believe it is marsh

Answer:

marsh

Explanation:

Similarities between exponential growth and logistical growth ?

Answers

Answer: Exponential population growth: When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve. When resources are limited, populations exhibit logistic growth. In logistic growth, population expansion decreases as resources become scarce.

Explanation:

Which of the following is an example of a detritus food chain?
A. Graas, Insects, Snakes.
B. Plankton, Large fish, small fish.
C. Organic matter, Bacteria, Molluscs.
D. All of the above.

Answers

Explanation:

Detritus food chain is the type of food chain that starts with dead organic materials. The dead organic substances are decomposed by microorganisms. The organisms that feed on dead organic matter or detritus, are known as detritivores or decomposers. These detritivores are later eaten by predators.

In science class, Maria observes a white-colored cut flower. She sees that the petals turn red when the flower is sitting in a vase that has
red-colored water.
She forms a hypothesis that the color reaches the flower through the stem. What should Maria do to confirm the hypothesis?
A. She should repeat the experiment with the same type of flower and photograph the changes over time.
B. She should ask her science teacher about the flower to confirm whether her hypothesis is correct.
C
She should try the experiment with a potted plant with roots and observe any color changes.
D
She should repeat the experiment with a different species of plant and photograph the changes.

Answers

Answer:

D

Explanation:

Its d I think tell me if it's wrong If it is I'm sorry

Answer:

A.

She should repeat the experiment with the same type of flower and photograph the changes over

Explanation:

NEED HELP DUE TODAY PLZ HELP ME I AM STUCK PLZ PLZ PLZ HELP ME!!!!

What three parts make up the modern cell theory?

Choose 3 answers:

(Choice A)
A
Cells can only come from other cells.

(Choice B)
B
Cells arise spontaneously.

(Choice C)
C
The cell is the building block of all living things.

(Choice D)
D
All organisms are made of one or more cells.

Answers

Answer:

d

Explanation:

all organisms are made of one or more cell

Question one - C

Question two - D

Question three - A

HELP!

A researcher observes the enzymatic polymerization of an organic molecule in a cell. Which enzyme is
MOST likely responsible for catalyzing the reaction?
A. a protein
O B. a nucleic acid
O C. a lipid
D. a carbohydrate

Answers

Answer:

A. a protein

Explanation:

Proteins function as enzymes in most of the catalyzing reactions, that increases the rate of reaction within cell.

Proteins are consist of multiple numbers of amino acids and the twisting and folding amino acids provide a unique identity to enzymes. Not all the proteins are enzymes but all the enzymes are proteins.

For example: Trypsin, Pepsin, and Lipases.

Hence, the correct option is "A. a protein".

The attractive force between two bodies of different substances that are
in contact with each other. *
Activation Energy
Enzyme
molecule
Adhesion

Answers

D. adhesion - adhesion is the attractive force between two bodies of different substances that are in contact with each other.

Which would most likely interact with an open flame and cause an accident
A-Covered shoes
B-Contact lenses
C-Goggles
D-Loose hair?

Answers

Answer:

D, loose hair.

Explanation:

If your hair is long enough, it could easily drift into the flame and catch on fire.

Answer:

D. Loose hair

Explanation:

Loose hair would be the most likely to cause an accident with an open flame.

Especially if the hair is long, it can dip down into the flame and catch on fire.

The other objects would not be interacting with the flame because they would be far away, while loose hair can reach into the area where the flame is.

Info
What step of the scientific method comes after forming
question?
a

Answers

After forming a question in the scientific method making a hypothesis comes next

Answer: making hypothesis

2. Four students raced toy cars on a track. The mass and the acceleration of each car is
recorded in the table below.
Toy Cars
Toy Car
Mass (kg)
Acceleration (m/s)
1
0.19
0.15
2
2.0
3.0
1.5
3
0.25
0.21
4
2.5
Which toy car had the greatest applied force?
A 1
B 2.
с 3
D4

Answers

Answer:

the answer is 4

Explanation:

i dont know how to explain it but i took the test and it was right.

The car with the greatest applied force is : ( D ) Car 4

Given that :

Force applied is calculated as : Mass * acceleration

Calculating the force applied on each car

For Toy car 1

mass = 0.19

acceleration = 0.15

Force = 0.19 * 0.15 = 0.0285 N

For Toy car 2

mass = 2.0

acceleration = 1.5

Force = 2 * 1.5 = 3 N

For Toy car 3

mass = 0.25

acceleration = 0.21

Force = 0.25 * 0.21 = 0.0525 N

For Toy car 4

mass = 2.5

acceleration = 3

Force = 2.5 * 3 = 7.5 N

From the answers above the car with the greatest applied force is car 4 with a force of 7.5 N

Hence we can conclude that The car with the greatest applied force is : ( D ) Car 4

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In your own words, recognize that theories do not become laws and laws
do not become theories.

Answers

They are both separate things and if they collide it creates problems

Which of the following is the independent variable for the previous
experiment?
scores on the test
the classical music
the classroom
the students taking the test

Answers

The classical music is the independent variable

what is the pressure that builds up inside of plant cells due to osmosis and the strength of the cell wall called?

Answers

It’s called cytoplasm I think that’s it

What facts did you use to predict the pH values of the solution?

Answers

To predict the Ph values of the solutions I thought about what I knew about each solution. Battery acid and stomach acid have the words acid in them, so I knew they would be on the acidic side of the scale. yeah

What causes an earthquake?


hard collisions between tectonic plates


buildup of pressure between tectonic plates


buildup of magma


extreme rock deformation

Answers

Answer: ( B. ) build up of pressure between tectonic plates

Explanation:

Explore the following website:Save The Pacific Northwest Tree Octopus What have the authors done to make the site look valid? What indications are there that the Pacific Northwest Tree Octopus is not real? Give three examples for each answer.

Answers

Answer:

They tried to make it look credible by listing the author and contacts and stuff but do not have any official sources. They are photo edited pictures from other people.

Explanation:

i added pictures from the web site and made note of added tiny details.

Identify the independent variable by highlighting it red. Identify the dependent variable by highlighting it yellow. 1. If I increase the temperature of the seeds, then germination will increase,​

Answers

Answer:

Independent variable: temperature ; Dependent variable: germination

Explanation:

The independent variable is what is being changed in an experiment. The dependent variable is what you are measuring in an experiment.

When the independent variable is changed (in this case, temperature), it effects the dependent variable (germination).

:What do we need to figure out next to explain what essential elements are found in
large molecules?

Answers

Answer:

sorry I don't have this answer

Spontaneous generation is

Answers

Answer:

Explanation:Spontaneous generation is a body of thought on the ordinary formation of living organisms without descent from similar organisms. The theory of spontaneous generation held that living creatures could arise from nonliving matter and that such processes were commonplace and regular.

what acid fermentation regenerates NAD+ with lactic acid

Answers

Answer:

actic acid fermentation

Explanation:

___ is the only continent not to experience tornadoes. Africa Antarctica America

Answers

antartica i think sorry if i’m wrong
Antarctica is the only continent not to experience tornadoes

An adult panda bear must eat at least 30 pounds of bamboo in a day. There are 12 adult pandas living in part of a
bamboo forest.
How many pounds of bamboo, at minimum, must be available each day in order to support the population of
pandas?
12
30
348
360

Answers

Answer: (D) 360

Explanation:

An adult panda bear must eat at least 30 pounds of bamboo in a day. There are 12 adult pandas living in part of a bamboo forest 360 pounds must available each day.

Why does panda only eat bamboo?

Panda comes under the specialist because its eats only bamboo because it's present abundantly and Thus they don't have to fight with other animals to get it.

Bamboo is rich in fibre but has less nutrients, so pandas have to eat 20 to 40 pounds of the elements every day just to get by.

Thus, option "D" is correct, 360.

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Adult giraffes eat about 75 pounds of food in a day. On average, an area can provide 450 pounds of food per day for giraffes.

Based on this information only, what is the carrying capacity for adult giraffes in this area?

6
75
375
450

Answers

Answer: the carrying capacity for adult giraffes in this area is: 6.

Explanation: [ 450 pounds divided by 75 = 6. ]

Fun Fact - Giraffes can drink up to 10 gallons of water a day and spend 16-20 hours a day feeding, their favorite food is Acacia Leaves.

Adult giraffes eat 75 pounds of food in a day. On average, an area can provide 450 pounds of food per day for giraffes.

The carrying capacity for adult giraffes in this area are 6.

How the carrying capacity for giraffes in given area is determined?

Adult giraffes eat = 75 pounds of food per dayArea provides = 450 pounds food per day

so, carrying capacity for giraffes in the area equals,

 food provided by are per day\ food eater by giraffes in a day

=450\75

= 6.

Hereby, carrying capacity of giraffes in this area is measured.

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What type of element is Iron
pls hurry

Answers

Iron is a brittle, hard substance, classified as a metal in Group 8 on the Periodic Table of the Elements. The most abundant of all metals, its pure form rapidly corrodes from exposure to moist air and high temperatures.

Glucose is a building block of carbohydrates. Which of these best describes glucose?
A. nucleotide
B. protein
C. monosaccharide
D. lipid

Answers

Answer:

monosaccharide

Explanation:

Glucose is called a simple sugar or a monosaccharide because it is one of the smallest units which has the characteristics of this class of carbohydrates.

Glucose is the simplest monosaccharide which cannot be broken down further. Thus, option C is correct.

What is Glucose?

Glucose is the primary component of carbohydrates. Glucose is a monomer made up of carbon, hydrogen and oxygen. Molecular formula of glucose is C6H12O6.

The functional group in glucose is an aldehyde present at the first carbon atom.

Glucose is called monosaccharides because it cannot be hydrolysed further. It is the simplest carbohydrate also referred as simple sugars.

Glucose molecules are chiefly linked together forming a glycosidic bond by removal of water molecule and form a disaccharide.  

Glucose is chiefly produced by plants during the process called photosynthesis.

Glucose is the key component in metabolism. It provides energy to the body cells to carry out physiological activities. Glucose is found in blood.

Excess of glucose in the blood results in a medical condition called diabetes. It can be life threatening if not managed on time.

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Science is open to change.
O True
O False​

Answers

False not unless it has went under many experiment to be proven else how

This is true in most cases. More is found about a topic, then what is known can change depending on what information can be found.

What conclusions can be drawn about the existence of carbon-12, carbon-13, and carbon-14? A) These are forms of carbon and they accommodate 6 neutrons and 6 electrons but each contains a difference number of protons - 6, 7, and 8 respectively. B) These are configurations of carbon and they have 6 protons and 6 neutrons but each contains a difference number of electrons - 8, 7, and 6 respectively. Eliminate C) These are isotopes of carbon and they all contain 6 protons and 6 electrons but each contains a difference number of neutrons - 6, 7, and 8 respectively. D) These are allotropes of carbon and they consist of 6 protons and 6 electrons but each contains a difference number of neutrons - 8, 7, and 6 respectively.

Answers

Answer:

C.

Explanation:

All these carbon atoms are isotopes: they have the same amount of protons (in this case, 6 because carbon always has 6 protons) and the same amount of electrons (6 because the carbons given have a neutral charge).

Therefore, the only thing we are changing is the atomic mass and the amount of neutrons present in each isotope.

In Carbon-12, there are 6 protons, 6 neutrons, and 6 electrons.

In Carbon-13, there are 6 protons, 7 neutrons, and 6 electrons.

In Carbon-14, there are 6 protons, 8 neutrons, and 6 electrons.

Answer:

These are isotopes of carbon they both contain 6protons and 6electrons but each contains a diff about of neutrons 6,7 and 8 respectively

Mosquito repellent is sprayed on one arm and the other one is not sprayed. the number of mosquito bites is counted after 2 hours. what is the dependent variable and independent variable?

Answers

Answer:

who will answer this

Explanation:

help for brainliest..........

Answers

I believe it is 137 kg. (the third one down)

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