2. What percentage of the Sun is composed of hydrogen?
0 1.5%
70%
28%
0.5%

Answers

Answer 1

Answer:

70%

Explanation:

Answer 2

Answer:

70%

Explanation:

About 70% of the sun is made of hydrogen

Hope this helps:)


Related Questions

Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane

Answers

Answer: The DNA located in the nucleus of the cell.  ATP is being rapidly consumed near the cellular membrane.

Explanation:

What is the meaning of Taxonomy?​

Answers

Answer:

It is a classification of something, especially organisms.

For example:

the taxonomy of these birds

This means the classifications of different types of birds

Hope this helps!

Answer:

I'm late but anyways i don't want the brainiest only a thank you

Explanation:

Taxonomy- is the scientific process of grouping living and non living things and organisms according to their specific groups

a man walking at 0.5 m/s accelerates to a velocity of 0.6 m/s in 1 s. what is his acceleration?

Answers

Answer:

I'm not sure but the answer would be 1.2

60 milligrams=____kg?

4.5 centimeters=___km?

Answers

Answer:

60 milligrams= 6e-5 kg?

4.5 centimeters= 4.5e-5 km?

Explanation:

9. The prefix mono- means “one" and the prefix poly-
means “many.” Some lipids are monounsaturated, and
others are polyunsaturated. Explain the difference
· between the fatty acids in these different types of lipids.

Answers

Answer:

Lipid molecules consist mainly of repeating units called fatty acids. ... Animals store fat as saturated fatty acids; plants store fat as unsaturated fatty acids. Types of lipids include triglycerides, phospholipids, and steroids. Each type consists of fatty acids and certain other molecules

Which of the following causes water from deep currents to rise to the surface to replace warm currents?
a. the flow of warm currents from the equator toward the poles
b. freezing of the surface of the water increased salinity due to evaporation
c. increased salinity due to evaporation
d. squeezing solids out of the ice down into the water below​

Answers

Answer: The flow of warm currents from the equator toward the poles

Explanation:The flow of warm currents from the equator toward the poles causes water from deep currents to rise to the surface to replace warm currents.

Answer:

c. increased salinity due to evaporation

Explanation:

29. ) Chromosomes are duplicated in the ______ phase

a.) G2
b.) M phase
c.) G0
d.) G1
e.) S phase

Answers

Answer:

Interphase (A.K.A. S Phase)

Explanation:

(Hope this helps)

3. Ashley Robert is a commercial pilot who worked in Ninoy Aquino International airport. Abruptly in
the sky, he noticed a thunderstorm approaching to their plane. Therefore, he decided to have a higher altitude for the passengers' safety. What would be the reason why pilot Robert did that kind of
decision?
a. To lessen the gas encounter to have a safe travel and landing.
b. To lessen the pressure in the aircraft wings.
c. To urge his eagerness in reaching the atmosphere
d. To experience an unforgettable event.

Answers

Answer:

To lessen the gas encounter to have a safe travel and landing.

To lessen the pressure in the aircraft wings
Hope it helps
But don’t copy in exam or u will suffer

Which statement about ionic bonds is correct? A. Ionic bonds form when similarly charged ions are attracted to each other B. Ionic bonds form when electrons are shared C. Ionic bonds form when oppositely charged ions are attracted to each other D. Ionic bonds form when a protons are shared between atoms.

Answers

Answer:

Option C. Ionic bonds form when oppositely charged ions are attracted to each other

Explanation:

An ionic bond is a bond that forms when two oppositely charged ions are electrostatically attracted to one other, where metal is an anion and nonmetal is a cation.

For instance, the bond between NaCl is an ionic bond where sodium is metal and anion (Na⁺) and chlorine is nonmetal and cation (Cl⁻) and makes salt.

Thus, the correct answer is - option C.

Answer:

the answer is C

Explanation:

im late sorry

please help will give brainliest!

-

The following factors will determine what type of volcano will form. Check all that apply.


The viscosity of the magma.


The gas content of the magma.


The silica content of the magma.


The geologic time period in which the volcano was formed.

Answers

Answer: The first three:

The viscosity of the magma.

The gas content of the magma.

The silica content of the magma.

Do the atoms that make up a rock move?

Answers

Yeah I think lol lol lol lol lol

How are map grid lines like landmarks? How are they different?

Answers

Map grid lines are similar because they help show location & map grid lines are different from landmarks because they are not visible in the real world.

How do waves interact with different materials?

Answers

Answer:

Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. Besides bouncing back like an echo, waves may bend or spread out when they strike a new medium. These three ways that waves may interact with matter are called reflection, refraction, and diffraction.

Explanation:

Waves interact with materials by eroding them over time. The way they the material erodes and how long it takes depends on the type of material. For example, less dense rock will break apart when it erodes, and it will not take as long. Metal will rust when it gets eroded, and it will take longer to be fully eroded.

WILL GIVE BRAINLIEST!!!!!
In the succession timeline we completed during class, we learned that mosses and lichens are able to grow on rocks and break them down into soil. Mosses and lichens are best described as:

Pioneer species

Carnivores

Decomposers

Detritivores

Answers

Decomposers. They break down materials into soil anything that breaks down natural materials is considered decomposers

Helpppppp meeeeeeeeeeeeeeeee

Answers

Answer: C. increases, increases, increases

Explanation: With adrenaline, more glucose is released from the liver into the blood if it has dropped too low. Pulse rate also increases along with more muscle strength which, ultimately, causes your breathing rate to increase.

Hope this helps!

At which stage is glucose broken into smaller molecules? O before cellular respiration begins Oduring the first stage of cellular respiration during the second stage of cellular respiration Oat the end of cellular respiration​

Answers

Answer: The first stage of cellular respiration, called glycolysis, takes place in the cytoplasm.

Explanation:

In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP.

hope this helps!

During cellular respiration, the lysis of glucose is the first step for the oxidation of glucose, hence option B is correct.

What is cellular respiration?  

Cellular respiration is the process through which cells get energy in the presence of oxygen from organic molecules and release carbon dioxide as a by-product.

There are several steps for cellular respiration through which energy is extracted from the glucose, the first step glucose is breakdowns to convert into pyruvate and then this oxidizes through the citric acid cycle and produces electrons that generate ATP.

The breaking of glucose through glycolysis which is the first step of cellular respiration generates electrons that flow through the electron transport chain and generate ATP as the cellular energy product.

Therefore, glucose is broken into smaller molecules in the first stage of cellular respiration.

Learn more about glycolysis, here:

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how does a thermostat regulate temperature

Answers

Answer:

yes

Explanation:

yes bc when it gets cold it goes down and when it gets hot it goes up

it regulates the flow of a heat transfer fluid. in other words it controls switching heating or cooling devices on or off

the information in DNA i. the nucleus is used to produce
A. proteins
B.Amino acids
C. Lipids
D. all the above

Answers

The answer is A
Proteins

The nucleus's DNA contains information that is used to make proteins, so the correct option is a. proteins.

The genetic instructions that control the order of amino acids in proteins are found in DNA. Protein synthesis entails the transcription of DNA into messenger RNA (mRNA) and the subsequent translation of mRNA into a particular sequence of amino acids that constitute proteins.

Even though lipids are significant molecules involved in numerous physiological processes, DNA-based instructions do not directly govern how lipids are produced. Different cellular functions and enzymes control the synthesis of lipids.

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Which statement best summarizes describes cell theory?

Answers

Answer:

what are the statements?

Explanation:

the cell theory is that all living organisms are made up of cells and all cells come from cells

Ty and Crystal are working together to learn about surface tension. They each add pennies to their own cup of water to see how many they can add before the cup overflows. Ty is able to add 15 pennies.
Crystal is able to add 38.
What should their next step be?
They should each claim that their answer is right
They should discuss differences in their methods.
They should record their results and move on to a different investigation
They should repeat the experiment using different pennies.

Answers

Answer:

B). They should discuss differences in their method.

Explanation:

As per the question, the next step in the given process would be 'the discussion of differences that exist between their methods which they are using to fill the cup.' This would help them understand how the difference in methods of putting water into the cup directly affects the tendency of the liquid to contract into the least surface area. They would also get to know how temperature affects the increase or decrease of surface tension. Thus, option B is the correct answer.

How does a cold day affect enzyme activity during photosynthesis?

Answers

Answer:

At low temperatures, between 32 and 50 degrees Fahrenheit – 0 and 10 degrees Celsius – the enzymes that carry outphotosynthesis do not work efficiently, and this decreases the photosynthetic rate. This leads to a decrease in glucose production and will result in stunted growth.

The nucleus includes all of the following structures EXCEPT

a
cytoplasm.
b
a nuclear envelope.
c
DNA.
d
a nucleolus.

Answers

Answer:

A. Cytoplasm

Explanation:

Cytoplasm is outside of the organelles, and is the jelly-like substance that holds all of the organelles and cell parts in place.

So, cytoplasm is not within the nucleus, because it is outside of the organelles, such as the nucleus.

On the other hand, the nuclear envelope, DNA, and nucleolus are all in the nucleus.

The nucleus includes all of the following structures except cytoplasm.

Thus, Cytoplasm is the name for the liquid that makes up cells. It includes additional organelles suspended in the cytosol along with filaments, ions, proteins, and macromolecular structures.

However, recent findings imply that the conventional notion of cytoplasm is no longer accurate. It was thought to be a fluid-like substance decades ago, but current research shows that it is more like liquids that create glass.

With the exception of the nucleus, the cytoplasm of eukaryotic cells is associated with the contents of the cell. Prokaryotic cells, however, lack a distinct nuclear membrane and instead store their genetic material in their cytoplasm.

Thus, The nucleus includes all of the following structures except cytoplasm.

Learn more about cytoplasm, refer to the link:

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In eukaryotic cells, cellular respiration (aerobic) occurs in the _____
Nucleus
Chloroplast
Mitochondria
Cell membrane
Cytoplasm

Answers

In the mitochondria

Which image shows a landform with low elevation and low relief?​

Answers

Answer:

The one with clouds or c

Explanation:

because on ed that's the correct answer

Answer:

its c

Explanation:

The biological process that has led to the greatest transformation of life on Earth is
Oa
b
Ос
Od
chemosynthesis
nitrogen fixation
photosynthesis
cellular respiration

Answers

Answer:

The biological process that has led to the greatest transformation of life on Earth is chemosynthesis.

Explanation:

Chemosynthesis is a process that allows the production of inorganic molecules in organic matter, through the oxidation of molecules such as carbon dioxide (CO₂). A clear example of this is the photosynthesis carried out by plants, taking advantage of CO₂ to generate their nutrients.

It is proposed that chemosynthesis was responsible for generating organic matter from inorganic molecules that existed on earth before the origin of life. It was perhaps the first metabolic reaction that arose on earth. Photosynthesis and cellular respiration are processes that follow chemosynthesis.

    The other options are not correct, because cellular respiration, biological nitrogen fixation and photosynthesis appeared on earth after the origin of living organisms.

Burning question: is it possible for life to thrive on earth without soil?

Answers

Answer: No

We get many crops from soil. If we do not get enough crops, we will run out of food and may die. The answer is no.

Hope this helps you!

The Answer correct answer is No

What are base unit measurements for the metric system?
A. feet, gallon and pound
B. grams, liters, and meters
C. Liters, pints, and miles
D. millilites, milligrams and millimeters ​

Answers

The correct answer is B. ( Grams, Liters, and meters.)

The total energy in our universe -
A (will not change,but can transform to other types
B ( changes and expands over time)
C ( only changes forms once)

Answers

Option A sounds like the best choice hope that helps

Skin tanning is an example of which adaptation technique? O A behavioral adaptation OB. cultural adaptation OC. structural adaptation OD. physiological adaptation​

Answers

Answer:

Physiological

Explanation:

Definition

A metabolic or physiologic adjustment within the cell, or tissues, of an organism in response to an environmental stimulus resulting in the improved ability of that organism to cope with its changing environment

Answer:

C) structural adaption

Explanation:

Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations. Adaptations are the result of evolution.

do you think you can help me with this?​

Answers

A car rusting

My reasoning for this answer is that the car physical appearance is changing over time, slowly rusting.

Therefore, I place my answer as “A car rusting”

Hope this helps you
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