as u move down the levels of classification the number of classification the number of organisms in the level decrease or increase?

Answers

Answer 1

Answer:

decrease

Explanation:

Answer 2
The number species decreases in each group moving down the levels of classification.

Related Questions

What causes objects to move or stay still?
Claim

Reasoning:

Evidence:

Answers

Answer:

For an object to move, there must be a force. A force is a push or pull that causes an object to move, change direction, change speed, or stop. Without a force, an object that is moving will continue to move and an object at rest will remain at rest.

Explanation:

What element is this? Ignore my answer choice.

Answers

Answer:

Aluminum

Explanation:

It is your choice because only aluminum has 13 protons

Answer:

yea its aluminum the 13 element because of its 13 protons

Which statement best describes what a circle graph shows?
A. A frequency distribution
B. Data as proportions of a whole
C. The average of a data set
D. The relationship between two variables

Answers

The answer is to the question would be B

I need help ASAP! 10 points!

Answers

Answer:

The answer to this question is ( a )

Explanation:

ionic: transfer of electrons covalent: sharing of electrons

Which equation using element symbols correctly describes the reaction: "One molecule of methane plus two molecules of diatomic oxygen react to form two molecules of water and one molecule of carbon dioxide?"

Answers

Answer:

CH4+2O2→2H2O+CO2

Two students make a model of a tree house they want to build. The sale is 1:44. In the scale model, the tree house has 2 windows. How many windows should be the real tree house have?
A. 22
B. 88
C. 4
D. 2

Answers

D. 2

The scale is talking about how if on the model it states the wall is 1 foot you would make it 44 feet The windows and doors are just there to make sure you don’t forget them. Hope this helped! :D

Two different samples of solid iron are shiny, can be made into wire, and can rust when exposed to water. Why do the two samples have identical properties? A) They are composed of different types of atoms. B) They are composed of the same type of atoms. C) They have different masses. D) They have the same mass.

Answers

Sorry I do not know the answer
They are composed of the same type of atoms.

What is the chemical symbol for table salt?

Answers

Answer: NaCI

Explanation:

Answer: NaCl

Sodium chloride , commonly known as salt (although sea salt also contains other chemical salts), is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.

Match the atomic particles with their characteristics.

1. made of two protons and two neutrons
2. similar to an electron; positive charge
3. orbits nucleus; negative charge
4. bundle of energy; zero charge
5. found in nucleus; positive charge
6. very unstable; +, -, or zero charge
7. found in nucleus; zero charge
8. negative particle; negative charge
9. atomic energy converted to mass

Words to match to:
alpha
electron
positron
neutrino
proton
beta
gamma
neutron
meson

Answers

1.Alpha
2.positron
3.electron
4.neutrino
5.proton
6.meson
7.neutron
8.beta
9.gamma

The atomic particles of which some are present in atom  with their characteristics are given in serial order:Alpha 2.positron 3.electron 4.neutrino 5.proton 6.meson 7.neutron 8.beta 9.gamma.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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DO NOT ANSWER IF YOU DO NOT KNOW WHAT TO DO

Answers

Answer:

im gunna save my answer so no one can take it:)

Explanation:

I tried my best

Answer:

Wxvylaura

Explanation:

They are correct listen to them

In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?(1 point)
A) Zn + 2HCl → H2 + ZnCl2

B) CH4 + O2 → CO2 + 2H2O

C) Li2CO3 → LiO + CO2

D) CO2 + H2O → CH2OH + O2

2. Which statement is true regarding a chemical reaction?(1 point)

A) Even if the total number of atoms does not change, mass may not be conserved in the reaction.

B) Even if the total number of atoms changes, mass may not be conserved in the reaction.

C) The total number of atoms changes, so mass is conserved in the reaction.

D) The total number of atoms does not change, so mass is conserved in the reaction.

3.
Use the equation and the table to answer the question.

FeCl3 + 3H2O → Fe(OH)3 + 3HCl

Element Mass of an Atom (amu)
Fe 56
Cl 35
H 1
O 16
Iron chloride and water react according to the equation shown. The table shows the atomic masses of the elements involved in the reaction. What is the total mass of the reactants?

(1 point)

A) 215 amu

B) 179 amu

C) 161 amu

D) 108 amu

4. In a chemical reaction, two molecules with a total mass of 76 amu react to form a single molecule. What is the mass of the molecule that is formed?(1 point)

A) 228 amu

B) 38 amu

C) 76 amu

D) 152 amu

Answers

Answer:

There are many types of chemical reactions. In this chapter we will begin with combustion

reactions and end with oxidation/reduction reactions. Along the way we examine various aspects

of reactions.

Homework from the book:

Exercises: 1, 4, 6, 8, 9, 11,12, 14-19, 23, 25, 26, 29

Questions: none

Problems: none

In the study guide: Multiple 4, 5, 6, 12-18.

There are many types of chemical reactions. In this chapter we will begin with combustion

reactions and end with oxidation/reduction reactions. Along the way we examine various aspects

of reactions.

Combustion reactions:

All combustion reactions fall into the pattern:

fuel + O2 → CO2 + H2O

The coefficients of the balanced equation will change depending on the fuel. The fuel can be

almost anything including methane (CH4), propane (C3H8), butane (C4H10), octane (C8H18) or

sugar (C6H12O6).

The balanced equation for methane is CH4 + 2 O2 → CO2 + 2 H2O

The balanced equation for octane is

2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

The combustion of methane or octane is exothermic; it releases energy.

CH4 + 2 O2 → CO2 + 2 H2O + energy

The energies of the products are lower than the energiies of the reactants. The excess energy is

released as heat and light.

Matter tends to move to lower energy states. A good analogy for a reaction is a ball falling down

a hill. Exothermic reactions are more likely to occur. Endothermic reactions absorb energy. In

these reactions the products are higher in energy than the reactants. Endothermic reactions are

less likely to occur. You seldom see a ball spontaneously going uphill. Endothermic reactions

can occur when entropy drives the reaction (pushes the ball up the hill). These reactions are far

less common. An exothermic reaction occurs in a chemical hot pack. (Skiers know about hand

and foot warmers.) An endothermic reaction occurs in a chemical cold pack.

The reaction in which the number of atoms are equal in both side is option A. The true statement regarding a chemical reaction is option D mass is conserved.

The total mass of reactants for the given reaction  is  179 g. The mass of the molecule formed will be 76 amu.

What mass conservation?

According to law of conservation of mass the total mass of the reactants is equal to the total mass of products in a reaction. No atoms are created or destroyed in a reaction.

1. The reaction in which the number of atoms are same on both side is option A, where both part contains 5 atoms.

2. According to mass conservation law, total number of atoms does not change, thus mass is conserved and option D is correct.

3. The atomic mass of Fe = 56 amu and the atomic mass of Cl = 35 amu. Mass of 3 Cl = 3×35 = 105 g

Thus mass of FeCl3 = 105 + 56 = 161 amu.

Mass of H = 1 amu and mass of O = 16 amu. Thus mass of 3 H2O = (3×(16+2)) =54 amu

Thus total mass = 54 + 161 = 215 amu

Thus, option A is correct.

4. According law of conservation of mass the total mass of reactant is equal to the total mass of products. Thus reactants of total mass 76 amu produce product of mass 76 amu. Thus option C is correct.

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The data table shows the number of pumpkin seeds that germinate at different temperatures. What is the median number of seeds that germinate at 32ºC?
A. 64
B. 65.5
C. 65
D. 66

Answers

Answer: I agree with the other person it's B

The answer is most likely B.

Which statement correctly describes the location and charge of a proton in an atom? A. The protons are inside the nucleus with a negative charge. B. The protons are inside the nucleus with a positive charge C. The protons are outside the nucleus with a negative charge. D. The protons are outside the nucleus with a positive charge.

Answers

After looking at it, the answer is B

Answer:

The correct answer is B

Explanation:

2. When the child is pushed in the toy car, he increases speed. Does he accelerate as he is being pushed?

Answers

Yes. Look up Newton’s laws of physics. That should help
I am pretty sure he does because he is going faster

WILL GIVE BRAINLIEST
List three examples of where potential energy is transformed to kinetic energy in the Rube Goldberg Machine simulation. Fully explain the energy transformations using complete sentences. (Example: The ball has potential energy when it sits on the shelf that transforms to kinetic energy when it falls to the ground.)

DO NOT COPY AND PAST THE ANSWER FROM 2018 AND IF YOU HAVE A QUSTOIN ABOUT IT ASK UNDER THE QUSTION DO NOT ANSWER IT TO ASK A QUSTION

Answers

Answer:

1. The ball will have potential energy at the top of the mountain, when the ball falls the ball will have kinetic energy .

2. The roller coaster has potential energy when stopped on the very top, therefore it releases kinetic energy when it falls down the rollercoaster.

3. The car on the hill had potential energy weather when it went down it had kinetic energy.

Explanation:

Sorry it took forever I had to think lol..

Answer:

ok lol

im bored

Explanation:

Which property describes a mixture? It cannot be separated by physical methods. It has a single chemical composition. It cannot have more than one state of matter. It cannot be described by a chemical symbol or formula.

Answers

Answer:

it cannot be separated by physical methods

Explanation:

The mixture is not separated from the physical methods. Thus, option A is correct.

A mixture has been the combination of two or more substances. It has been described as a homogeneous solution.

The constituents in the mixture are indispensable. The mixture is generally homogeneous, however, heterogeneous mixtures have been possible with the substances being separated.

The mixtures have a different chemical composition and are not separated from the physical methods. Thus, option A is correct.

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CO2(g) + NH3(g) + H2O(l) → NH4HCO3(s) witch type of reaction plzz within 1 hour

Answers

combination reaction

In the early 1900s many scientists thought that an atom consisted of a positive substance with negative charges scattered throughout the substance. Then Ernest Rutherford made a discovery that led to the understanding that an atom consists mostly of empty space with- * 20 points A. protons orbiting a dense nucleus made of electrons and neutrons B. Neutrons and protons orbiting a cloud of electrons C. Electrons and protons orbiting a cloud of neutrons D. Electrons orbiting a dense nucleus made of protons and neutrons

Answers

The answer is D. (I think-)

Answer:

D(pretty sure)

Explanation:

Which subatomic particles change the mass number? (select all that apply) Protons Neutrons Electrons

Answers

protons and neutrons i think , sorry if i’m wrong.

Answer:

protons and neutrons pretty sure

Explanation:

Which of the following determines if a substance is pure or a mixture? Select all that apply. a . Whether the mixture changes color when you apply a flame. b. Whether the matter is in a solid, liquid, or gas state. c. Whether the parts can be separated by physical or chemical methods. d. Whether you can see the parts without a magnifying device.

Answers

Answer:

free trees

Explanation:

Please match the example with the classification of matter in which it belongs. Column A 1. soil: soil 2. chocolate milk: chocolate milk 3. neon: neon 4. water: water Column B a.element b.homogeneous c.compound d.heterogeneous mixture

Answers

Answer:

34

Explanation:

add

What has to happen for these atoms/molecules to change from one state of matter to another? *view attachment*m

Answers

Answer:thermal energy has to be added or transferred

Explanation:I’m not sure you might want to double check but the reason I chose thermal energy is because when thermal energy is added to liquid it may dissolve into gas

Thermal energy has to be added or transferred. When thermal energy is added to liquid it might dissolve into gas hopes this helps :)

As the toy car rolls away, it slows down. Why?

Answers

Answer:

Friction

Explanation:

Depending on the material the toy car rolls away on, the more friction is created, the more friction there is, the more on surface rubs against another, creating friction, slowing it down

hope this helps

235
92
U +
1
0
n →
90
36
Kr +
A
56
Ba + 3
1
0
n

Answers

Answer:

A= 143 B=146 C=56

Answer:

A: 143

B: 146

C: 56

Explanation:

Which statement best describes properties of elements? A) All elements have a similar structure and hardness. B) All elements are either metals or gases. C) All elements are solid and magnetic. D) All elements have mass and occupy space

Answers

Answer:

D

Explanation:

That is the right answer

A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH? 1 3 6 11

Answers

Answer:

6

Explanation:

Answer:

6

Explanation:

Obi is trying to determine if a powdery, solid substance is an element or a compound. After recording some observations, he strongly heats a sample of the solid over a burner flame. After fifteen minutes, he turns off the flame and allows the sample to cool. He records his final observations in the data table.

A 3-column table with 3 rows. The first column labeled observation has entries appearance, mass (g), chemical reaction with weak acid. The second column labeled original sample has entries white solid, 100.0, bubbles. The third column labeled sample after heating has entries white solid, 56.0, no bubbles.
Which is the best explanation of his results?

A. The heating changed some of the sample to gas, causing the mass to decrease without breaking down the sample. Therefore, the original sample is a compound.

B. The appearance stayed the same, showing that the sample was not broken down by heating. Therefore, the original substance is an element.

C. The mass decreased during heating and some of the impurities escaped. Therefore, the original substance is an element.

D. The chemical reaction with acid changed, showing that the sample was broken down by heating. Therefore, the original substance is a compound.

Answers

An element consists of one type of atom and cannot be broken into simpler substances through simple chemical processes

The correct option is option D

D. The chemical reaction with acid changed, showing that the sample was broken down by heating. Therefore, the original substance is a compound

The reason why option D is correct is as follows:

The given table is presented as follows;

[tex]\begin{array}{|l|l|l|}\mathbf{Observation}&\mathbf{Original \ Sample}&\mathbf{Sample \ After \ Heating}\\Appearance&White \ solid&White \ solid\\Mass&100 \, g&56 \, g\\Chemical \ reaction \ with \ acid&Bubbles&No \ bubbles\end{array}\right][/tex]

Given that the changes after heating includes lack of visible reaction with the weak acid, and a significant change in mass, therefore;

The original substance was broken down by heat resulting in a new substance that has different chemical properties. An element cannot be broken down into simpler substances. Therefore, the substance is a compound

The correct option is option D

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SCIENCE!! i need help on the question in the middle please!!!

Answers

The earth would be the answer because it has the most mass and is heavier than all of the other objects
The earth is the answer

What is the formula name!!
I will give brainliest !!…

Answers

Answer:

I think this is the formula CH₃COOH.

Explanation:

the person above me is correct:)

A group of people take a diet pill. After 3 months, they measure the amount of weight they lost.
A :Independent Variable:
B: Dependent Variable:

Answers

dependent variable I think

dependent variable the person above is right too, I think
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If the probability of getting a particular result in a experiment is 75.3% what is the probability of not getting the result 11 times 11 in exponential expression Different viewpoints of the same situation, all of which are valid, is alsoknown as:O A. social intoleranceB. personal identityO C. multiple perspectivesO D. all of the aboveIdkkkk Amira needs 24 and StartFraction 3 over 10 EndFraction feet of fencing material to make a fence for her small garden. Which number represents the additive inverse of this number? EASY BUNCH OF POINTS & WILL GIVE BRAINLIEST:) Find the distance FG between the points F(2,7) and G(4, -1). Round your answer to the nearest tenth, if necessary. FG= Air conditioners operate on the same principle as refrigerators. Consider an air conditioner that has 7.00 kg of refrigerant flowing through its circuit each cycle. The refrigerant enters the evaporator coils in phase equilibrium, with 54.0 % of its mass as liquid and the rest as vapor. It flows through the evaporator at a constant pressure and when it reaches the compressor 95% of its mass is vapor. In each cycle, how much heat Qc is absorbed by the refrigerant while it is in the evaporator? The heat of vaporization of the refrigerant is 1.50105 J/kg THIS IS HARD HELP.... which is not a line of symmetry' someone please solve this 3n+9n=-2(7-4n)-(1+n) 6. What is Mass???????????????? what is the purpose of my life? Given that p(x) is a polynomial in 2 and a R. If (x a) is a factor of p(I), then p(a) must beSelect one:a. negativeb. irrationalC. Zerod. positive Date Battle Result April 19, 1775 June 17, 1775 Dec. 31, 1775 Aug. 27, 1776 Oct. 26, 1776 Dec. 26, 1776 Sept. 11, 1777 Sept. 19, 1777 Oct. 4, 1777 Oct. 7, 1777 Dec. 5, 1777 June 8, 1778 Sept. 16, 1779 March 29, 1780 Sept. 28, 1781 Question 1 options: The three main causes of death - cancer, heart disease, and injury, remain constant throughout life. True or false. True False 4. Which statement best describes how paragraph 4 developsthe tone of the speech?O A By describing the Holocaust, Wiesel introduces asomber and introspective tone.OB By describing a young boy, Wiesel injects a hopeful andoptimistic tone.OC Wiesel explains the horrors of the Holocaust, whichdevelops a grim tone in the speech.D Wiesel's impassioned descriptions create an urgent toneas he builds to a call to action. a line passes trough the point (1/2,2/3) and has a y intercept of 4. what is the slope of the line written as a fraction? What does not change during a scene? Find the inverse of s.= {(-2, -7), (0, -3), (2, 1), (4, 5), (5, 7)} Which term can be used in the blank of 36x322x2__ so the greatest common factor of the resulting polynomial is 2x? Select two options. 2 4xy 12x 24 44y Question: How can reframing, or thinking about things in a different way, help us to deal with pressure?Answer: Reframing, or thinking about things in a different way, can help us deal with pressure because...Continur after beacause...