14. Which of the following groups is most at risk for developing this disease?
a) children born to mothers with dark skin, living far from the equator
b) adults with dark skin who live close to the equator
c) children born to mothers with light skin who live close to the equator

Answers

Answer 1

Answer: c

Explanation: built different


Related Questions

Mass number is
O the average atomic mass of an element.
O the total number of electrons in an atom of an element.
O the total number of protons in an atom of an element.
O the total number of protons and neutrons in an atom of an element.

Answers

Answer:

4 th is the answer......

The answer is D . Tu é man

A massless length of twine can withstand a maximum tension of 490 N. The twine is used to spin a 28-kg ball in horizontal circular motion of radius 1.8 m. The ball is spun faster and faster until the twine breaks. What was the maximum speed of the ball?

7.2 m/s
3.2 m/s
5.6 m/s
11 m/s

Answers

Answer:

5.6 m/s

Explanation:

What is one example of pre-exising marine life?


dinosaur egg


shrimp burrow


leaf imprint


bird bone

Answers

Answer:

Shrimp burrow

Explanation:

Shrimp are types of sea life, whales eat them

The correct answer is shrimp burrow (obviously)

Please help! I’ll mark brainliest for best answer!

Answers

Answer:

The Atomic Number

Explanation:

The X would be the Atomic Number or amount of protons sorrounding the nucleus of that atom.



Transfer of heat through conduction can occur in which of the following?


A. Solids


B. Liquids

C. Gases
D. All of the above

Answers

Answer is D All of the above

Why do electrons falling into different orbits give off characteristics wavelengths?​

Answers

Explanation:

Because the difference in energy between orbits is different in different types of atoms, moving electrons between different orbits requires photons carrying different amounts of energy (different wavelengths).

Adding or removing thermal energy causes a change in state of matter.
O True
O False

Answers

Answer:"You can change an object's state of matter by adding or removing thermal energy. When you add thermal energy to an object, these things can happen: Particles move faster (increased kinetic energy). Particles get farther apart (increased potential energy)."

Explanation:

TRUE :))) !!!! yup here ya go

Isotopes of the same element have different numbers of
A protons
B neutrons
C neutrons and electrons
D protons and electrons

Answers

Isotopes of the same element have different numbers of
A protons
B neutrons
C neutrons and electrons
D protons and electrons
the answer is B neutrons

ummmm im in 2nd period and in test prep

Answers

the answer is 2g/mL. hope this helps

I will pick the brainiest answer! Thanks! :)

1. What is the difference between a chemical and physical change?

2. What is the difference between a property and change?

Answers

Physical change changes it’s physical look but doesn’t change what it is or it’s composition. Chemical change changes the composition.

Physical properties are those that can be observed without changing the identity of the substance. Chemical properties are those that can be observed only when a substance is changed into a new substance. ... Chemical changes are changes that occur when one substance is turned into another substance.

Answer:

1. What is the difference between a chemical and physical change?

physical change :-

no substance is formedproperties of components before and after are the samereversibleexample:- solubility, melting, condensation and boiling

chemical change :-

new substance is formedproperties of components before and after are differentirreversible example:- burning, rusting, oxidation and neutralisation

2. What is the difference between a property and change

change:-

A physical change in a substance doesn't actually change what the substance is. It remains the same. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

property:-

A physical property is an aspect that can be observed or measured without being changed. A chemical property may only be observed by changing the chemical identity or substance.

HOPE THIS HELPS

Which of the following elements is a metalloid? A. phosphorus B. cobalt C. silicon D. magnesium

Answers

Answer: silicon

Explanation:it just is

Respuesta

es la C. silicio

Explanation:

No existe una definición estandarizada de elemento metaloide ni un consenso completo sobre los elementos que son metaloides.

En la clasificación de metaloides se suelen incluir a:

Boro (B)

Silicio (Si)

Germanio (Ge)

Arsénico (As)

Antimonio (Sb)

Telurio (Te)

What is a convection current (Be sure to include how temperature and density are involved.

Answers

Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material. ... A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy. Convection is a heat transfer process.

If this same quantity of energy were transferred to 2.5 kg of water at it's boiling point what fraction of the water would be vaporized

Answers

Answer:

Fraction of water that can be vaporized = 0.0961 or 9.61%

Note : The question is incomplete. The complete question is given below:

A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 kJ) when digested by your body.

If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what  fraction of the water would be vaporized?

Explanation:

Energy released by a serving of Cheeze-Its = 130 kcal

Since 1 kcal = 4.18 kJ, 130 kcal = 130 * 4.18 kJ = 543.4 kJ

Heat of vaporization (evaporating or condensing) Hv, of water = 2260 J/g

From formula, quantity of heat, Q = mass  * heat of vaporization

mass of water = 2.5 kg = 2500 g

Q = 2500 g * 2260 J/g

Q  = 5650000 J = 5650 kJ

Therefore 2.5 kg of water requires 5650 kJ of heat for complete vaporization

Fraction of water that can be vaporized by 543.4 kJ energy = 543.4/5650

Fraction of water that can be vaporized = 0.0961 or 9.61%

Where do you find the Group 1 and Group 2 metals?

Answers

Answer:

far left

Explanation:

Colour in acid of red litmus paper​

Answers

Red

Litmus paper turn red when it comes in contact with acid. It turn blue if it come in contact with a base. Neutral litmus paper is purple

If the atomic number of an element is 16, what is the element's identity?
What is its atomic mass

Answers

Answer: The element is sulfur and the atomic mass is 32.07

Explanation: wasn’t sure what you were asking so gave you both

Beaux has purchased a synthetic material for a product he is launching. What is most likely a benefit of this material?

It is biodegradable.
It can be recycled cheaply.
It is heavy.
It can be mass produced.

Answers

Answer:

The answer is D. it can be mass produced

Explanation:

Answer:

The answer is D It can be mass produced.

Explanation:

I just took the test

Jeremiah pushed Anthony with a net force of 12 N. Anthony accelerated across the hall at 0.2 m/s2. What was Anthony’s mass?

Answers

Answer:

6

Explanation:

Answer:  60 kilograms

Work Shown:

Force = Mass*Acceleration

F = ma

12 = m*0.2

12/0.2 = m

60 = m

m = 60 kilograms

Define organic and mineral acids​

Answers

Answer:

In general, organic acids are weak acids and do not dissociate completely in water, whereas the strong mineral acids do. Lower molecular mass organic acids such as formic and lactic acids are miscible in water, but higher molecular mass organic acids, such as benzoic acid, are insoluble in molecular (neutral) form.

will this help?

The Synthesis Reaction of aluminum (Al) and iodine (I) forms a new, more complex
product. What is the product?

Answers

Answer:

Aluminum iodide (AlI₃)

Explanation:

The synthesis reaction of aluminum (Al) and iodine (I) can be illustrated as shown below:

Aluminium exhibit trivalent positive ion (Al³⁺)

Iodine exhibit univalent negative ion (I¯)

During reaction, there will be an exchange of ion as shown below:

Al³⁺ + I¯ —> AlI₃

Thus, we can write the balanced equation for the reaction as follow:

Al + I₂ —› AlI₃

There are 2 atoms of I on the left side and 3 atoms on the right side. It can be balance by putting 2 in front of AlI₃ and 3 in front of I₂ as shown below:

Al + 3I₂ —› 2AlI₃

There are 2 atoms of Al on the right side and 1 atom on the left side. It can be balance by putting 2 in front of Al as shown below:

2Al + 3I₂ —› 2AlI₃

Thus the equation is balanced.

The product on the reaction is aluminum iodide (AlI₃)

What is the concentration of a solution of 10. Moles of copper nitrate in 5.0 liters of solution

Answers

Answer:

10.5

Explanation:

well we added together so thats the result

help help help!!!!!!!!

Answers

Answer:

Your answer is B

The reason why B is right is that even though gravity is pushing down on the marble it is also causing it to go down the ramp. As the marble rolls down the ramp, it gathers speed because it starts out slow and as it gets closer to the ground/table it gets faster because of the revolutions per second that the marble takes while going down.

I'm not sure if this makes sense to you or not. I'm sorry if it doesn't.

Hope This Helps!

An object has a mass of 441 g and a volume
of 10 cm3. What is the density of the object
in g/cm3?

Answers

The density is the ratio of the mass to the volume. The density of the object is 44.1 g/cm³.

What is density?

Density (ρ) is the quantitative measurement of the substance having grams of mass that are dissolved per cubic meter of the solution. The density is calculated as:

ρ = M ÷ V

Given,

Mass of the object = 441 gm

The volume of the object = 10 cubic meter

Density is calculated as:

ρ = 441 ÷ 10

= 44.1 g/cm³

Therefore, 44.1 g/cm³ is the density of the object.

Learn more about density here:

https://brainly.com/question/952755

#SPJ1

Need help ASAP!!please

Answers

It would be option 2 because water is the most dense with 1.0 detergent is the next most dense with .93 and the oil is the least dense with .92

A student analyzed an unknown sample that contained a single anion. The sample gave a white precipitate upon addition of a solution of AgNO3 which dissolved in ammonia. Which anion is present in the unknown solution? Write the corresponding net ionic equation.

Answers

Answer:

Chloride ion

Explanation:

The anion present in the unknown solution would be chloride ions.

A white precipitate of silver chloride is usually formed when drops of silver nitrate are added to a solution containing chloride ions. The ionic equation is as below:

    [tex]Cl^- (aq) + Ag^+ (aq) --> AgCl (s)[/tex]

Help please! I’ll mark brainliest to who ever answers this first!!

Answers

Answer:

paleontologists is the answer to scientist who studies fossil

Using the three words below (cell wall, cell membrane and animal cell) construct your own sentence using what you have learned about plant and animal cells. PLEASE HELP ME IT WILL BE

Answers

Answer:

Explanation:

Both eukaryotic and prokaryotic cells have a cell membrane, which defines the limit between the environment surrounding the cell and the cell itself.

Eukaryotic cells can be either animal cells or plant cells. Plant cells, apart from the membrane, are surrounded by a cell wall that is thick and conformed by carbohydrates and peptides. This cell wall makes the cell resistant and gives it its shape. Animal cells, on the other hand, do not have cell walls, they only have the cell membrane, that regulates the entrance of nutrients and the exit of metabolic products.


This is methane, Methane is gas that is found in small quantities in Earth's atmosphere. Methane is the simplest hydrocarbon,
consisting of one carbon atom and a powerful greenhouse gas. What is the chemical formula for methane?
A)
4CH
B)
C4H
C)
C4H4
D)
CH4

Answers

Answer:

CH4

Explanation:

I looked it up and took the test

Answer:

You go to K12?

Explanation:

50 points:


Several thousand years ago, people sought after the truth about the nature of matter by

Answers

Answer:

Is this a true or false?

Explanation:

is this a t or f question?

You can see protons yes or no

Answers

No. Not with the naked eye

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