How many Natural elements are on the periodic table.

Answers

Answer 1
From 118 elements there are only 94 natural elements
Answer 2
Only 94 elements in the periodic table

Related Questions

3. Which of the following best describes a marsh?
deep ocean water miles from a river's mouth
a rocky, coastal area with very high tides
a shallow, sheltered area near an estuary
a sunny, open area with lots of sand dunes
I NEED HELPPPP HURRRYYYY

Answers

Answer: a rocky, coastal area with very high tidesa shallow, sheltered area near an estuary

Explanation: because it’s an area low-lying land which is flooded in wet seasons or at high tide, and typically remains waterlogged at all times.

Answer:
C) a shallow, sheltered area near an estuary

Explanation:

A marsh is a shallow, sheltered area generally found near an estuary. They are often between aquatic and terrestrial ecosystems. Like other marine ecosystems, some marshes experience tides. Therefore, these tidal marshes are exposed during low tide and underwater at high tide. Marshes that are not as close to the coast are called nontidal marshes.

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More information on marshes:

The producers that thrive in marshes are herbaceous, meaning they do not have woody stems. Just like estuaries, marshes are rich in nutrients and are home to an abundance of wildlife.

Neurons have special proteins in their
cell membranes that allow them to generate
electrical current. Are these proteins most
likely produced by ribosomes on the rough ER
or ribosomes suspended in the cytoplasm?
Explain your answer.

Answers

Answer:

The ribosomes on the rough endoplasmic reticulum (RER) most likely produces neuronal special proteins.

Explanation:

Conduction of electrical impulses by action potentials of neurons takes place through controlled flow of charged ions through neuronal membranes. This ion transfer is controlled by specialized neuronal channel proteins which are present in the neuronal cell membrane.  

These channel proteins allow for hydrophillic passage of ions and water molecules across the neuronal membranes.  

Ribosomes that are attached to the RER are involved in protein synthesis. They carry the code for proteins carried by the mRNA and translate into respective protein.

The RER along with some free ribosomes cluster together as Nissl bodies and are mainly involved in neuronal specialized proteins.

What does each person do just before becoming infected?

Answers

Answer:

They became careless and transferred to every body saying i cant all of us has to die

PLLLSSSS HELPPPPPppppppp

Answers

Answer:

bacteria

Explanation:

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How does the relative and absolute
age of rocks and the fossil record
provide evidence to Earth's geologic
history?

Answers

To determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones. With absolute age dating, you get a real age in actual years.

A plant has the genotype AArrSs. Cross out gene combinations that cannot be produced or are not normal in the haploid gametes of this plant: Aas ArS Ars arS aRs Arr AS AArrSs

Answers

The gene combinations that cannot be produced or are not normal in the haploid gametes of this plant are as follows:

AArrSsASArrarS

What is a Triploid?

Triploidy is a genetic term used to describe the possession of three genes in the genotype of an organism.

According to this question, a plant has the genotype AArrSs. This plant has three genes as follows: AA, rr and Ss.

During gamete formation, each gamete will be made up of the three genes in equal proportion. The allele combination of the gametes formed will are as follows:

ArSArs

This means that the gene combinations that cannot be produced or are not normal in the haploid gametes of this plant are as follows:

AArrSsASArrarS

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how is atp produced in the photo phosphorylation

Answers

Answer:

Photophosphorylation is the conversion of ADP to ATP using the energy of sunlight by activation of PSII. This involves the splitting of the water molecule in oxygen and hydrogen protons (H+), a process known as photolysis.

Explanation:

Photophosphorylation is the conversion of ADP to ATP using the energy of sunlight by activation of PSII. This involves the splitting of the water molecule in oxygen and hydrogen protons (H+), a process known as photolysis.

Which of the following should NOT be included in your conclusion?
A) A statement of whether your hypothesis was correct or not
B) A scientific explanation for
your conclusion
C) A list of materials required for the experiment
D) All of these should be included in the conclusion

Answers

Answer:

C

Explanation:

A list of materials required for the experiment is not necessary to include when one gives a conclusion

Carl Woese developed his system of classification among groups of organisms based on DNA sequences of

Answers

Answer:

Carl Woese developed a method of using ribosomal RNA to compare the relationship between microorganisms and has now been extended as a means to classify all organisms.

Explanation:

What is the most likely reason that a long beak could be an adaptation for a
bird living in a temperate forest?
A. The bird could use the beak to crack open nuts.

B. The beak would make it harder to hunt prey.

C. It would be more difficult for the bird to reproduce.

D. The beak would allow the bird to hide from predators.

Answers

The most likely reason that a long beak could be an adaptation for a bird living in a temperate forest is the bird could use it to crack open nuts.

What is an adaptation?

An adaptation is a phenotypic feature that is able to confer an evolutionary advantage to the individual.

In this case,  a bird with a suitable beak could allow the bird to crack open nuts and thus increase the evolutionary fitness.

In conclusion, the most likely reason that a long beak could be an adaptation for a bird living in a temperate forest is the bird could use it to crack open nuts.

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Answer:

A. The bird could use the beak to crack open nuts.

Explanation:

Which of the following best describes the compositional layers of the earth? a. All layers of the Earth below the crust are liquid. b. The only liquid layer of the earth is the mantle. c. The crust floats on top of the outer core. d. Some layers of the earth are liquid, and some are solid. Please select the best answer from the choices provided A B C D

Answers

Answer:

The answer to this question is "D" Some layers of the earth are liquid, and some are solid.

Explanation:

Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid.

The option that correctly describes the compositional layers of the earth is : ( D ) Some layers of the earth are liquid, and some are solid.

Earth composition

The earth is composed of the Core, mantle, and crust which are categorised based their varying composition. The crust consists of the oceanic crust and continental crust. WhileThe lithosphere is composed of both the crust and the portion of the upper mantle which are similar to brittle rigid solid.

Hence we can conclude that The option that correctly describes the compositional layers of the earth is Some layers of the earth are liquid, and some are solid.

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You would get the most energy to run a race by taking in ______________.

Answers

Answer:

glucose

Explanation:

the glucose is energy in it simplest form so wen taken in it moves straight to the blood stream to provide the strenght

An organism takes care of its young and produces few offspring. What type of organism is this?

Answers

Answer:

K-strategists

Explanation:

K-strategists are those types of organisms that live in a stable environment and reproduce/give birth to fewer amount of organisms compared to R-strategists. Examples : Human beings, Elephants etc.

what is the exact percentage and depth in centimeters for the earths layers project

Answers

Answer:

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Explanation:

The three main layers of Earth include the crust (1 percent of Earth's volume), the mantle (84 percent), and the core (inner and outer combined, 15 percent).

Crust - 5 to 70 km thick.

Crust - 5 to 70 km thick.Mantle - 2,900 km thick.

Crust - 5 to 70 km thick.Mantle - 2,900 km thick.Outer Core - 2,200 km thick.

Crust - 5 to 70 km thick.Mantle - 2,900 km thick.Outer Core - 2,200 km thick.Inner Core - 1,230 to 1,530 km thick.

Biomass and fossil fuels similarities

Answers

Answer: Biomass and Fossil fuels are similar to coal with an oxygen atom added.
Natural gas is the best fossil fuel in terms of energy output per unit carbon dioxide emitted. While Biomass is renewable because a new crop can be grown after each harvest, and biomass is a low carbon fuel.

Explanation: Fossil fuels and biofuels are similar in that they are both formed from once living matter and both emit carbon dioxide when burned for energy.

What unique ability does carbon have?

Answers

Answer:

Carbon has an exceptional ability to bind with a wide variety of other elements. Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen.

Explanation:

Left-handedness (r) is recessive in humans and right-handedness is dominant (R).
Tracy, a left-handed woman, and whose mother and brother are also left-left handed,
marries Sa who is right-handed. Sam's mother is left-handed and his father and sister
are right-handed. What is the expected genotypic ratio of the children Sam and Tracy
might have?
ORr:2rr:ORR
1Rr:2rr:1RR
2Rr:2rr:ORR

Answers

The expected genotypic ratio of their children is 2Rr:1rr:1RR.

What is Genotype?

This can be defined as the genetic composition of an organism. Since Sam and Tracy possess heterozygous traits, their genotypes will be Rr and Rr.

When this is crossed , we will get :

Rr  × Rr

RR Rr Rr rr

This means the genotypic ratio will be 2Rr:1rr:1RR.

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what are the symptoms of people living with cancer?​

Answers

Answer:

1. Fatigue or extreme tiredness that doesn't get better with rest.

2. Weight loss or gain of 10 pounds or more for no known reason.

3. Eating problems such as not feeling hungry, trouble swallowing, belly pain, nausea, and vomiting.

4. Swelling or lumps anywhere in the body.

what is not a branch of biology

Answers

Answer:

Geology

Explanation:

Geology is the study of rocks and the earth and is a different field of science

the answer is geology; it’s the study of rocks and the earth, it is a completely different field of science

Jaiden once loved going to the doctor's office because the doctor would give him a sticker. However, the last three times he has gone, Jaiden received painful shots that caused him to cry. Now when the doctor hands him the sticker, he begins to scream. Which of the following is the neutral stimulus?

Shot
Screaming in pain
Sticker (after the conditioning)
Scream
Sticker (before the conditioning)

Answers

its would be sticker after the conditioning explanation: because he knows when he gets a sticker he will get a shot which makes him cry, he know he will get a shot during the 3 times he has been at the doctors

The ______ connects the third and fourth ventricles and is found in the mesencephalon (midbrain). Multiple choice question. cerebral aqueduct reticular formation periaqueductal gray matter superior colliculus

Answers

The cerebral aqueduct  connects the third and fourth ventricles and is found in the midbrain

Cerebral aqueduct

cerebral aqueduct is a brain structure located in the brain stem which connects third and fourth ventricles. It contains a cerebrospinal fluid ( CSF ). which flows from the third ventricles to the fourth ventricles.

The midbrain is the part of the brainstem associated with hearing, sleep and the regulation of the human temperature.

Hence we can conclude that The cerebral aqueduct connects the third and fourth ventricles and is found in the midbrain

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Why are we testing Dl water when we know it does not contain protein?

Answers

Answer:

using distilled water as a test substance is a way to show a control in the experiment

Explanation:

distilled water has no impurities therefore it eliminates the sources of any contamination and gives accuracy to an experiment distilled water is also used to know if actually a chemical reaction takes place or not

Use this example to explain why natural selection does not operate on a characteristic which affects fitness but is not heritable.

Answers

Answer:

What example ? ellaborate.

Explanation:

Label each part of the cell! 100 POINTS!!

Answers

Answer:

Where is the question photo

2. You observe a cell under a microscope and notice a cell wall. You conclude that this cell could be
O A plant cell
O An animal or plant cell
O A plant cell or a bacterial cell
An animal cell

Answers

Answer:

a plant cell

Explanation:

plants are the only ones with cell walls

I would definitely pick a plant cell

Identify the substance. cholesterol carbohydrate lipid nucleic acid protein

Answers

Answer:

Lipid

Explanation:

Cholesterol is a steroid which is a subclass of lipid

Composed primarily of pyramidal-shaped zymogenic cells that produce enzymes. What is the primary enzyme produced here, and what substance does it break down

Answers

The pyramidal-shaped zymogenic chief cells produce pepsinogens which act on proteins molecules.

What are chief cells?

Chief cells are cells are located at the base of the gastric glands found also in the body and fundus of the stomach.

Chief cells are pyramidal-shaped zymogenic cells that produce enzymes such as pesinogen 1 and 11.

The pepsinogens are proenzymes or zymogens and are converted to the active enzymes person 1 and person 11.

Pepsin 1 and 11 are proteolytic enzymes and act on proteins to break them down.

Therefore, chief cells produce pepsinogens which act on proteins molecules.

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A student placed some clean rocks in a clear plastic jar. The jar was filled with clean water and covered with a lid. The student then shook the jar up for five minutes. The student noted that smaller pieces had broken off some of the rocks and that there was a fine grit on the bottom of the jar. Which change of Earth's surface was the student modeling? *
A. mechanical weathering
B. chemical weathering
C. erosion of sediments
D. forming deltas
E. I don't know

Answers

Answer:

A. Mechanical weathering

Explanation:

Mechanical weathering can speed up weathering by fast, rapidly moving water. In the question, the process was caused when the student shook the jar with water and rocks inside.

Q1: What form of energy is this new animal sensitive to?*
potential
kinetic
thermal
elletrical

Answers

Answer:

elletrical. hope this helps!

Explanation:

How many miles from the North pole do you have to travel to find the first tree?

Answers

Answer:

In the Tagia Forests, 1,000 miles south of the North Pole, in the Arctic Tundra.

Explanation:

What is known as the arctic tundra stretches from the North Pole all the way to the south. It's still roughly around 1,000 miles from the North Pole until you reach the Tagia Forests, which are located in the baren snows of the arctic.

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Rainwater is naturally acidic.O TrueFalse Round 56,650,243 to the nearest ten million 1 Believe it or not, we had to wake up at 4 A.M. to catch the bus to catch the train to catch the ferry! But the Statue of Liberty was totally worth it. It was awesome. We saw people sailing around it in fancy yachts. I kept thinking of the people who looked at this same statue from overcrowded ships.2 I found our trip to the Statue of Liberty really fascinating and also surprisingly emotional. It was a long and draining trip. Any amount of travel was worth seeing this awe-inspiring sight, though I was reminded of the waves of immigrants who sailed past her on their way to Ellis Island.1.Which paragraph is written in an informal or casual style?2.Give a word or phrase that is an example of this informal style.3.Give a more formal word or phrase from the other paragraph.4.What word would you use to describe the writers tone, or attitude toward the topic, in the first paragraph? A star produces energy by:A. expanding and contracting its magnetic field.B. creating sunspots and releasing coronal ejections.C. combining two atoms to form a larger atom, releasing energy.D. splitting atoms apart, releasing energy in the form of photons. The property of water thaj refers to itsability to stick to itself is called Child level explanation for what the cell membrane does for the cell Rakim charges $2 per hour for tutoring plus a $7 fee.Joan charges a $3 fee plus $4 per hour.When will their tutoring fees be the same (aka equal)How many hours of tutoring will occur before the fees are the same? How much has each person been paid in tutoring fees? Which of the following is a scalar quantity?velocityspeedforce How does water form during cellular respiration? Use the Distributive Property to write an expression equivalent to 5 x (3 + 4) All substances have characteristic physical and chemical properties.Physical properties are those that can be observed with the senses without changing the identity of the substance.Chemical properties describe how a substance can be changed into a new substance.Physical and chemical properties, such as color, density, boiling point, solubility, conductivity, and flammability, A. depend on the amount of the substance. B. have the same values for all substances. C. are always different between substances. D. do not depend on the amount of the substance. A rectangle has length 4 yards more than its width. The area of the rectangle is 96 square yards. Find thelength and the width. What is the coefficient ofthe term of degree 6 in thepolynomial below?3x^2 14x^6 + 6x^3 + 12x +5x^5 8 vanilla cones, 15 strawberry cones, and 25 chocolate cones in one evening. What percent of the cones sold were strawberry? Which of the following is the complete list of roots for the polynomial function f (x) = (x squared + 6 x + 8) (x squared + 6 x + 13)? in 2015, Oklahoma experienced 907 perceptible earthquakes (far surpassing California), for an average of about 2.5 perceptible earthquakes per day. Consider perceptible earthquakes that occur independently with a constant daily rate of 2.5 What is the probability that a given day would have 1 perceptible earthquake? Which group of Japanese society would be similar to the knights of the European Middle Ages?Group of answer choicesnone of these answers is correctsamuraishogundaimyo HHHHHHHHHHHEEEEEEEEEEEEELLLLLLLLLLLLPPPPPPPPPPPPP AAAAAAAAAAAAAAAAAAAAAAASSSSSSSSSSSSSSSSAAAAAAAAAAAAAAAAPPPPPPPPPPPPPPPPP True or false ?????? Urgent what is the factor of 6a2 19a + 10 ???