. What is the first step of thermonuclear fusion within the Sun to form helium-4?
The fission of hydrogen to form protons and neutrons.
Two lithium atoms, each with three protons and three neutrons, undergo fission to form hydrogen atoms with
Two hydrogen nuclei, each with only one proton, fuse to form deuterium, a form of hydrogen with one protor
O Electrons and protons fuse to form the nucleus of a helium atom.

Answers

Answer 1

Answer:

a nucleus of Deuterium (2H)

Explanation:

formed from two protons with the emission of an antielectron and a neutrino. In the basic Hydrogen fusion cycle, four Hydrogen nuclei (protons) come together to make a Helium nucleus.


Related Questions

Which types of plant cells does glucose originate

Answers

Answer:

Chloroplast

Explanation:

Green plants manufacture glucose through photosynthesis. In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.

How much weight can a Electromagnet carry

Answers

Answer:

500 pounds

Explanation:

I am smarty farty. Also, i just

Did some math that no one understands :C

Answer:

500 pounds

its not that easy to explain

whats released during cellular respiration

Answers

Answer:

During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).

Which of the following is a problem that could result from poor monitoring of free range grazing?

The increased use of antibiotics
The additional exposure of soil layers
The prevention of invasive plant species
The higher rates of mental illnesses in animals

Answers

Answer:

The additional exposure of soil layers.

Explanation:

Antibiotics are administered by humans, so less contact with humans won't cause an increased use of antibiotics. The prevention of invasive plant species is not a problem, nor would it be caused by improper management of free range animals. Mental Illness in animals is usually caused by being put in small enclosure or living in poor conditions, not by being allowed free range. Therefore, the answer is the additional exposure of soil layers, since excessive grazing can decimate plant and soil layers.

I hope that helped!

Answer:

The additional exposure of soil layers

Explanation:

I took the test and I got it right

What is an example of a population in a desert ecosystem

Answers

Answer:

scorpions

Explanation:

scorpions live in but the desert

Because of the good soil
composition found in this biome, the
majority of the farmlands in the
United States are found in
A. deserts
B. temperate forests
C. grasslands

Answers

Answer:

C. Grasslands

this list of characteristics describes organisms in the _____ kingdom

Answers

this list of characteristics describes organisms in the united kingdom

Why does a cis fatty acid have a kinked shape?

Answers

Answer:

Steric hindrance in the cis orientation causes the chain to take on a more bent shape. Most natural unsaturated fatty acids are in the cis conformation. As can be seen in Figure 2.327, the cis fatty acids have a more of kinked shape, which means they do not pack together as well as the saturated or trans fatty acids

Explanation:

Which of the following is NOT produced by most plants?

A.Fruits

B.Roots

C.Leaves

D.Poison

Answers

Answer:

D.Poison

Explanation:

Poison is not produced by most plants.

Poisons are dangerous to plants,even a people and animals

Brainliest me thank for later

In a laboratory setting, embryonic stem cells can differentiate into which
types of cells?
any cell from the same organism
any type of prokaryotic cell
any cell from a different organism
any type of eukaryotic cell

Answers

The answer is any cell from the same organism.

Why should we see the sticks motion well before we see its color?

Answers

Answer:

the surface of an object reflects some colors and absorbs all the others.

correct me if i'm wrong :)

Assess It! Part 2
KESLER
SCIENCE
Use the vocabulary words from "Read It" to complete the
following sentences.
When rocks break apart into smaller pieces, it is called
(4)
Changes in temperature can cause rocks to
become slightly larger, or (5).
and become
slightly smaller, or (6)
This is often seen with a
type of weathering called (7)
where water
freezes and thaws inside the cracks of rocks. Another
type of weathering is called (8).
I
where the salt
that is left behind when water evaporates can cause
pressure in cracks of the rock.




Words are

Mechanical
Weathering
Depositon
Expand
Contract
Freeze thaw
Frost wedging
Salt wedging
Evoparte

Answers

Answer:

This unit is divided into 3 Arcs. Arc 1 answers the essential question, “What is weather and what factors influence

the weather?” The learning activities included in this arc guide students to use observation skills in order to

describe, explain, and predict weather patterns. Students will learn that the sun’s energy is the driving force of our

weather. They will complete activities to learn about wind, clouds, precipitation, temperature, and the role the

water cycle plays in our weather.

In Arc 2, students examine the essential question, “How does the ocean affect our weather?” Students will

complete activities to help them describe and explain the gulf stream, El Nino, La Nina, Sea and Land Breezes as

well as hurricanes.

Arc 3 allows students to investigate the essential question, “How does weather affect our lives?” Students will

complete activities to help them explain why our choices are based on the weather, as well as the impact that

climate change as on ecosystems. During the culminating activity in Arc 3, students research how to prepare for

extreme weather. Students have several opportunities to use their observations skills while working on their

nature journal

Explanation:

Weathering is the process by which rocks disintegrate into smaller fragments. Rock expands (with heat) and contracts (with cold) in response to temperature changes.

What is Weathering?

Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms.

Rock responds to temperature fluctuations by expanding with heat and contracting with cold. This is frequently observed with a weathering process known as Frost wedging, in which water freezes and thaws inside rock fissures. Salt wedging is a different type of weathering in which the salt that is left over after water evaporates can exert pressure on rock fissures.

Thus, Weathering is defined as the process by which rocks disintegrate into smaller fragments.

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The Changing Forms of Carbon
In this activity, you will describe and apply what you just learned about the carbon cycle. You will examine the
picture below and then write two paragraphs that describe the process and changing forms of carbon.
Global Carbon Cycle
Wo.com
Atmosphere
Tour
750
Soil Respiration
Docomposition Photosynthesis
58
120
Burning
Plant
Fossil
Respiration
Fuels
59
Deforestation
and Land Use
Change
1.1
Ocean
Loss
Ocean
Uploke
90
7.7
92
IL
Plants
560
Litterfall
59
Rivers
0,8
Soils
Fossil Fuels
5,000 -10,000
1,500
Earth's Crust
100,000,000
Surface Ocean 725
Intermediate and
Deep Ocean 37,275 Pg
0.01
Borial to Sediments

Answers

Carbon is found in different forms on the Earth. It is found as carbon dioxide in the atmosphere, as carbonate and bicarbonate salts in various minerals, as well as it occurs in the elemental form of diamonds and graphite. All biotic factors are based on carbon-containing molecules like carbohydrates, proteins, fats, nucleic acids and vitamins. Carbon is incorporated into life-forms through photosynthesis which is performed in the presence of sunlight by all life-forms that contain chlorophyll. Photosynthesis converts CO2 from the atmosphere or dissolved in water into glucose molecules. These molecules are either converted into other substances or used to provide energy for the synthesis of other biologically important molecules.

The use of glucose to provide energy to living things involved the process of respiration in which oxygen may or may not be used to convert glucose back into CO2. This CO2 goes back into the atmosphere again. The process of combustion also adds to the level of carbon dioxide in the atmosphere. This percentage is said to have increased when human beings started cutting down trees, burning fossil fuels, etc. on a very large scale. Thus, carbon is cycled repeatedly through different forms by the various physical and biological activities and this cycle is therefore called carbon cycle.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Carbon cycle is a biogeochemical cycle in which the carbon atom continously moves in the atmosphere through different forms and processes.

What is Carbon cycle?

The carbon cycle is the biogeochemical cycle which describes the process through which carbon atoms continually travel from the atmosphere to back to the Earth and then back into the atmosphere. This cycle goes on repeatedly. Since our planet and its atmosphere forms a closed environment, the amount of carbon in this system does not change, it only transforms from one form to another.

The processes which takes place in carbon cycle include photosynthesis, decomposition, respiration, and combustion. Carbon cycles from the atmosphere into the plants and living things. For example, carbon is a pollutant in the atmosphere which is present as carbon dioxide gas.

Carbon moves from the plants and animals to soil. When the plants and animals die, their bodies, wood, and leaves decays which being carbon into the ground. Some of this carbon is buried and become fossil fuels in millions of years. Carbon moves from living things to the atmosphere through respiration in which they inhale oxygen gas and exhale carbon dioxide gas.

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List the eight most abundant elements of the Earth's Crust

Answers

Oxygen, Silicon, Aluminum, Calcium, Iron, Magnesium, Sodium, and Potassium

Question 5 of 25
Engineers must design a process for producing a large amount of ammonia in a reasonable amount of time. Which criterion would the process need to meet
O A. The rate of product formation must be high.
B. The process must use a known technology.
C. The reactants must come from natural sources.
D. The rate of formation of the reactants must be high.
SUBMIT

Answers

An engineer while developing a procedure for producing a large amount of ammonia in a reasonable quantity of time must meet the standard that the process must utilize a known technology.

What is ammonia?

Ammonia exists as a colorless, pungent gas comprised of nitrogen and hydrogen. It exists as the easiest stable compound of these components and serves as a starting material for the production of numerous commercially important nitrogen combinations. The major usage of ammonia exists as a fertilizer. In the United States, it exists usually applied directly to the soil from tanks including liquefied gas.

Therefore, the (B) option exists as the correct answer.

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can someone give me the answers and teach me how to do this?

Answers

Answer:

a) B. b

B. BB. Bb

b Bb. bb

b) H. H

h Hh Hh

h Hh. Hh

c) X. x

x Xx. xx

x Xx. xx

After food in the stomach is mixed with gastric juices, it forms a semiliquid called Select one: a. phlegm b. chyme c. bile d. feces e. bolusin

Answers

The stomach is the sac-shaped part of the gastrointestinal tract. The stomach wall has folds that open when the stomach is full to store swallowed food. Digestion of food in the stomach is done by gastric juice and its movements. At the end of digestion in the stomach is a digestive mixture called chyme

write features of animal cell​

Answers

Answer:

Cell membrane Controls the movement of substances into and out of the cell

Cytoplasm Jelly-like substance, where chemical reactions happen

Nucleus Carries genetic information and controls what happens inside the cell

Mitochondria Where most respiration reactions happen

Answer:

Cell membrane Controls the movement of substances into and out of the cell

Cytoplasm Jelly-like substance, where chemical reactions happen

Nucleus Carries genetic information and controls what happens inside the cell

Mitochondria Where most respiration reactions happen

Explanation:

Which is an example of a limiting factor that is dependent on population size?

Answers

Answer: Food can be an obvious answer because people will not survive without food so they will die. And death means there will be a decrease on population size. So food can be a limiting factor that is dependent on population size.

Answer:

A limiting factor that depends on propulation size is called a density-dependent limiting factor.

Density- dependent limiting factors include: competition, predation, parasitism and disease.

.・。.・゜✭・have a nice day・✫・゜・。.

what objects could we find in the stratosphere​

Answers


What objects can you find in the stratosphere?: The stratosphere extends from the top of the troposphere to about 50 km (31 miles) above the ground. The infamous ozone layer is found within the stratosphere. Ozone molecules in this layer absorb high-energy ultraviolet (UV) light from the Sun, converting the UV energy into heat.

Researchers have found that most individuals are able to remember information about what age?
Three-four?

Answers

Answer:

2 and younger

Explanation:

If three is the youngest option, please select that one!

3. Label the diagram with the following words
DNA
Cell
Gene
Chromosome
nucleus
Base Pair

!!!!!!
(Don’t worry about number 2)

Answers

Answer:

ok so i think the X shape is a chromosome, that blank space in the big spot is calleed a nucleas. The arrow on the top right is a cell, the bottom right is base pair, the bottom left is dna and the top middle is called the gene.

Explanation:

please please help me it’s overdue and i don’t know how to do this

Answers

Answer:

The answer is A.

Explanation:

The answer is A.

Answer:

A and B i think im 99% sure

Explanation:


Which of the following best describes the cellular location where pyruvate dehydrogenase is most likely active?
(A) The cytosol
(B) The lysosomes
(C) The nucleus
(D) The mitochondrial matrix

Answers

The organelle where cellular respiration where pyruvate dehydrogenase is most likely active is; Choice D: The mitochondrial matrix.

Discussion:

In eukaryotes, the pyruvate dehydrogenase complex, like the enzymes for citric acid cycle and oxidation of fatty acids, is located in the mitochondrial complex, where is associated with the surface of the inner membrane facing the matrix.

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Where can cells that are able to differentiate be found?

Answers

Answer:

it can be found in higher plants and embryonic stem cells in animals

PLEASE HELP WITH THIS ONE QUESTION
What systems supply food and oxygen needed for respiration?

A) excretory, digestive, and respiratory

B) excretory, respiratory, and cardiovascular

C) digestive, respiratory, and cardiovascular

D) digestive, excretory, and cardiovascular

Answers

What systems supply food and oxygen needed for respiration quizlet? The circulatory system carries nutrients (food/glucose) and oxygen to the muscles where the mitochondria can use the oxygen to break down the food to produce cellular energy.

What percentage of polled animals can we expect?

Answers

50%! Half of the table has Pp and the other half has pp.

Organisms that live where there is no
light use a process that converts energy
from chemicals into sugars. What is it
called?
A. photosynthesis
B. dark reactions
C. chemosynthesis
D. chemical bonding

Answers

Answer:

c

Explanation:

Answer:

c

Explanation:

Chemosynthesis is the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Organisms that reproduce sexually are different from organisms that
reproduce asexually in that sexually reproducing organisms have

A. a larger number of offspring

G. offspring that are nearly identical to their parent

V. more genetic variation among their offspring

E. offspring that are perfectly adapted to their parents' habitat

Answers

Answer:

I think it's V!

Explanation:

It's because they have 2 sets of genetic variations which are delivered from the (pollen in plants and sperm in animals)-while the other one is an egg which is a gamete...

"Sexually reproducing organisms make sex cells or gametes."

In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur during meiosis?
A) prior to meiosis I
B) prior to meiosis II
C) prophase I in meiosis I
D) prior to meiosis I and meiosis II​

Answers

Answer:

I guess prlor to melosis is the right answer

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Last week, as my best friend Areliss and I headed to class, a group of college protesters blocked our path. Their signs read "GO HOME" and "ILLEGALS LEAVE." They shouted, "Send them home!" These protesters couldn't have known what Areliss felt as they shouted and waved pamphlets in our faces like tattered flags. But, I know their words were bullets to Areliss's heart. I wanted to fire back to the protestors: Where are your ancestors from?Areliss came to the United States illegally, but she didn't do it intentionally. She was a baby. Her parents, seeking a better life, failed to follow the established immigration procedure, and they slipped into our country undetected. Once here, they raised Areliss, who would grow up never knowing any other home but America.Under DACA (Deferred Action for Childhood Arrivals), Areliss has been granted the temporary opportunity to remain here while she completes her college education. 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They forget that our long and colorful history has been built by many immigrantsincluding the immigrants who fought for and founded our country. They forget that Lady Liberty stands as a beacon, asking for the tired, the poor, and the huddled masses yearning to breathe free. We have a responsibility to them.To send DREAMers away is to deny that responsibility. Programs like DACA exist to keep the American dream alive.Yes, Areliss is a DREAMer. But I, too, have a dream. My dream is that DACA will be reinstated. My dream is that Areliss will be invited to stay in the country she has known as home since she was a baby and live out her dreams in the country she loves.Sincerely,Brittany Taylor Please help me on this math problem HELP WAAAAAAAAAAAAAAA Write an expression that represents the perimeter of he rectangle 1. 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Solar and wind energy are clean energy sources that should be used more often to reduce the pollution on Earth.Which text structure does the author use to organize the passage? A. classification B. definition C. problem and solution D. sequence