1. Explain the difference between genetic, environmental, social, and pathogenic factors.


2. How do pathogens spread?


3. How can we, as humans, prevent transmission of pathogens?


4. List three ways the environment can affect personal health.

Answers

Answer 1

1. Genetic factors are those where the genetic condition of an individual is capable of increasing the probability of developing certain diseases.

Environmental factors include the diversity of environmental stresses such as population density, temperature, food and pollutants that impact human health.

Social factors are related to the interaction of groups through culture, social class and family structure, which also have an effect on population health.

Pathogenic factors, on the other hand, are those transmitted by agents such as viruses, fungi, bacteria and protozoa, which colonize a host by adhering to cells and evading immunity, generating diseases.

2. The transmission of pathogens can occur in several ways, such as contact with bodily fluids from infected people, cross-transmission or through being spread through particles in the air.

3. We can prevent the transmission of pathogens through proper hygiene habits, healthy eating, vaccination against infectious diseases and avoid contact with other people if you have a communicable disease.

4. The environment can affect personal health through climate change, pollution and lack of infrastructure that lead to less access to quality food and basic health conditions.

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Related Questions

A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. Find(a) the mass percent of solute and (b) the mass percent of solvent. ​

Answers

Answer:

[(15g NaCl/(70+15)]*100 = % NaCl

{(70g H2O/(70+15)]*100 = % H2O

Explanation:

A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. (a) The mass percent of solute is 17.64 % and (b) The mass percent of solvent is 82.35 %.

How to calculate the Mass percent of solute ?

Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex]  × 100

How to calculate the Mass percent of solvent ?

Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

Here,

Mass of solute (table salt) = 15.0 g

Mass of solvent (water) = 70.0 g

(a) The mass percent of solute

Put the value in above formula we get

Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

                             = [tex]\frac{15}{15 + 70}[/tex] × 100

                             = [tex]\frac{15}{85}[/tex]  × 100

                             = 17.64 %

(b) The mass percent of solvent

Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

                             = [tex]\frac{70}{15 + 70} \times 100[/tex]

                             = [tex]\frac{70}{85} \times 100[/tex]

                             = 82.35 %

Thus, we can say that (a) The mass percent of solute is 17.64 % and (b)  The mass percent of solvent is 82.35 %.

     

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Identify the correct chemical name.
Select one:
a. calcium (II) hydroxide
b. chromium hydroxide
c. ammonium calcide
d. ammonium chloride​

Answers

The answer is D ammonium chloride
The answer is a because calcium is a substance

Don’t understand this science Question.

Answers

What is the question?

Answer:

I got you..you need help but with which question?

Explanation:

Have a great day!

Pls fast pls due today pls pls I don’t wanna fail

Answers

Answer:

2:true

3: true

4:false

5: true

Explanation:

2KClO3 —> 2KCl2+ 3O2
true if balanced or false if not
reaction type 1: synthesis, 2: decomposition, 3: single replacement, 4: double replacement, 5: combustion

Answers

Answer:

False. The balanced equation should be

2KClO3-->2KCl + 3O2

it is a decomposition reaction.

An aqueous solution has a volume of 2.0 L and contains 36.0g of glucose. If the Molar Mass of glucose is 180g/mol, what is the molarity of the solution
Convert grams of Glucose to moles of Glucose and then solve for Molarity
show all work.

Answers

Answer:

moles = 36/180 = 0.2 moles

molarity = 0.2/2 = 0.1 mol/dm3

explain the electrolysis of MgCl2 in aqueous solution

Answers

During electrolysis, a current is passed through the molten MgCl2, and when this happens, the Mg2+ ions move to the negative electrode where they PICK UP OR GAIN ELECTRONS. This is reduction. The Cl- ions move to the positive electrode where they LOSE ELECTRONS. This is oxidation.

The modern-day quantum model of the atom is better than John Dalton’s model because it
A. has set electron orbits.
B. has positive and negative particles in the nucleus.
C. can be represented in one dimension.
D. answers many questions about atoms.

Answers

Answer:

its D. answers many questions about atoms.

The modern-day quantum model of the atom is better than John Dalton’s model because it "  answers many questions about atoms."

What is quantum model ?

This concept also referred to as the quantum mechanical and wave mechanical model, would be the cornerstone of contemporary atomic theory. The fact that an electron inside an atom may only exist in a limited range of states or energy is analogous to a standing wave.

What is John Dalton’s model ?

Dalton proposed that the concept of atoms will be used to explain the laws of conservation of mass as well as definite proportions. Imagining atoms as "solid, massy, hard, impenetrable, moving objects," he claimed that almost all matter would be composed of these tiny, indivisible particles.

Dalton also stated that almost no atom might be formed, converted into another, as well as destroyed. The complex shapes of orbitals also known as electron clouds used in the quantum mechanical atomic model are areas of space where an electron is likely to be present. So rather than being based on certainty, this model would be probability based.

Therefore, the correct answer will be option (D)

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The DEA has designated five chemicals often found in spice as _____ controlled substances, making it illegal to sell, buy, or possess these chemicals.

Answers

Answer:

I'm pretty sure this doesn't really connect with chemistry much but the answer should be Schedule 1 as stated by the Drug enforcement agency.

What is the difference between a conductor and an insulator?

Answers

A conductor is what helps heat or electricity pass through an object. Examples of conductors are, silver, iron, aluminum, etc..

An insulator does the opposite and instead, stops either from going through. Examples of an insulator is paper, wood, rubber, etc.

Why is acetic acid called weak acid?​

Answers

Answer:

because...it is not strong enough proton donor to be entirely converted to hydronium ions in aqueous solution...

Explanation:

lemme know whether that was helpful!

Pls help I will give u points pls

Answers

Answer:

i think D

Explanation:

Which statement best describes mechanical energy?

the energy of electricity and motion

the energy of heat and magnetism

the energy of electricity and heat

the energy of moving parts and motion

Answers

Answer:

The energy of moving parts and motion

Explanation:

Mechanical energy doesn't have change in temperature or heat, so electricity and heat would be cancelled out. Mechanical energy is more about motion.


Does this aid in joining the two molecules?

Answers

Answer:

yes it does aid in joining the two molecules

Explanation:

What does the law of conservation of matter state?
a Matter can be created, destroyed, and changed.
b Matter can be destroyed and created, but not changed.
c Matter can be changed, but not created or destroyed.
d Matter can be created and changed, but not destroyed.​

Answers

The answer is c. Matter can be changed, but not created or destroyed.

4. How are isotopes of the same element different? Select all that apply.
[]They have different masses.
[]They have different numbers of electrons.
[]They have different numbers of neutrons.
[]They have different numbers of protons.

Answers

[tex]\huge \bf༆ Answer ༄[/tex]

The Correct choice is ~ A

Isotopes are the elements with same Atomic Number but different masses ~

Nylon is a synthetic material that has many uses. It is used in the production of machine parts, cookware, and fabric. Nylon is made from petroleum and natural gas. Suppose that there were a shortage of petroleum and natural gas. What would companies that produce nylon likely need to do? A. identify a different natural resource that nylon could be made from B. search for nylon in many different parts of the earth C. convert existing nylon back into petroleum and natural gas D. find a way to make nylon without using natural resources

Answers

In case of a shortage in petroleum and natural gas, a company should find a way to make nylon without using natural resources.

Nylon is a very important material used in numerous applications. As a result of this, the demand for nylon as a raw material has genuinely been on the high side ever since.

However, nylon production depends on petroleum and natural gas. It is possible that there could be a shortage of these resources since they are obtained from the environment. In such cases, a company should  find a way to make nylon without using natural resources.

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Answer:

identify a different natural resource that nylon could be made from

Explanation:

I just did this question

What makes solids, liquids, and gases different. Explain the hypothesis, prediction and experiments that can lead to scientific theory.

Answers

Answer: Gases, Liquids, and Solids

Gases

Explanation:

Behavior

gas liquid solid

assumes the shape and volume of its container

particles can move past one another assumes the shape of the part of the container which it occupies

particles can move/slide past one another retains a fixed volume and shape

rigid - particles locked into place

compressible

lots of free space between particles not easily compressible

little free space between particles not easily compressible

little free space between particles

flows easily

particles can move past one another flows easily

particles can move/slide past one another does not flow easily

rigid - particles cannot move/slide past one another

a hypothesis is a prediction based on a theory. If the Hypothesis comes true the theory is more accepted.

A scientific theory differs from a scientific fact or scientific law in that a theory explains "why" or "how": a fact is a simple, basic observation, whereas a law is a statement (often a mathematical equation) about a relationship between facts.

Ethanol (C2H5OH) reacts with oxygen gas in a combustion reaction. How many liters of carbon dioxide gas are produced at STP when 375 mL of a 75.0% ethanol solution by mass with a density of 1.22 g/mL reacts with excess oxygen?

Answers

The volume of carbon dioxide produced when 375 mL of a 75.0% ethanol solution by mass with a density of 1.22 g/mL reacts with excess oxygen is  667.52 L.

We are told in the question that the solution contains 75.0% ethanol solution by mass.

Hence;

Density of solution = mass/volume

mass = Density × volume = 1.22 g/mL × 375 mL = 457.5 g

Mass% = mass of solute/ mass of solution × 100

Mass of solute = x

Mass of solution = 457.5 g

Mass percent = 75.0%

Substituting values;

75 = x/457.5 + x × 100

75/100 = x/457.5 + x

0.75(457.5 + x) = x

343.125 + 0.75x = x

343.125  = x -  0.75x

x = 343.125/0.25

x = 1372.5 g

The equation of the reaction is;

C2H6O(l) + 3O2(g) → 2CO2(g) + 3H2O(l)

Number of moles of ethanol =  1372.5 g/46 g/mol = 29.8 moles

From the reaction equation;

2 moles of ethanol produces 2 moles of carbon dioxide

29.8 moles of ethanol also produces 29.8 moles of carbon dioxide

If 1 mole of carbon dioxide occupies 22.4 L

29.8 moles of carbon dioxide occupies 29.8 moles × 22.4 L/ 1 mole

= 667.52 L

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five (5) muscular injuries and disease​

Answers

Answer:

tendinitis.

carpal tunnel syndrome.

osteoarthritis.

rheumatoid arthritis (RA)

fibromyalgia.

bone fractures.

Me and the whole world

How quickly the electron are moving through the circuit
A.Resistance
B.voltage
C.current

2.The strength with which electrons are pushed through the circuit?
A.Resistance
B.voltage
Current

Answers

Answer:

B

Explanation:

because the electrons are moving fast

B because electrons move very quickly

Do the ingredients changing into a cake in the oven a chemical reaction?

Answers

Answer:

When you bake a cake, the ingredients go through a chemical change. A chemical change occurs when the molecules that compose two or more substances are rearranged to form a new substance! When you start baking, you have a mixture of ingredients. The flour, egg, sugar,

Explanation:

i need help with this asap..
1. What has shininess
2.ability to change its shape

Answers

I think it's metal if its abt science

Answer:

i think metal or glass not sure but i think its metal

Explanation:

What is x?





a
28
b
44
c
224
d
136

Answers

Answer:

Hope answer is right, d=136

An elephant takes a deep breath, releasing 9.50g of CO2. How many molecules CO2 is this?

Answers

Answer:

3 significant figures.

Explanation:

So, a mole is essentially a group of things. In this case, a mole of carbon dioxide will contain

6.022 ⋅ 10 [ by the 23rd power]

molecules of carbon dioxide. In other words, in order to have

1 molecule  of carbon dioxide, you need to have 6.022 ⋅ 10 [by the 23rd power] molecules of carbon dioxide.

You know that 5.00 ⋅ 10 [ by the 2nd power]  molecules of carbon dioxide are exhaled from the lungs when we breathe out. You can use Avogadro's constant as a conversion factor to help you figure out how many molecules are present.

an atom of chlorine has an amount number of 17 and a mass number of 37. how many protons neutrons, and electrons are in the atom?

Answers

Answer: There are 20 protons neutrons in the atom

What type of chemical reaction is Al + FeO --> Al2O3 + Fe

Answers

Answer:

single reaction equation

Explanation:

Type of Chemical Reaction: For this reaction we have a single replacement reaction. Balancing Strategies: In this single replacement (also called displacement) reaction the Al and Fe are switching places.

Is this a male cat or female?

Answers

Explanation:

Lift the kitten's tail. The opening just under the tail is the anus. Below the anus is the genital opening which is round in males and is a vertical slit in females. In kittens of similar size, the distance between the anus and the genital opening is greater in the male than the female.

TW: use of inapropate words*

Answer:

not enough information to tell

Explanation:

One way you can tell this difference is the distance between the cat's genitals (organs seen on the outside of the body) and the anus.  A male will have a much greater distance between the genitals and anus than females, 1/2 inch apart on a male kitten and over 1 inch apart on a male adult cat.  However, if the two are almost adjacent on a kitten or less than 1/2 inch apart on an adult, it’s a female.

Consider the reaction below. Upper C upper C l subscript 5 (g) double-headed arrow upper P upper C l subscript 3 (g) plus upper C l subscript 2 (g). At 500 K, the reaction is at equilibrium with the following concentrations. [PCI5]= 0. 0095 M [PCI3] = 0. 020 [CI2] = 0. 020 M What is the equilibrium constant for the given reaction? 0. 042 0. 42 2. 4 24.

Answers

The equilibrium constant of the reaction is 0.042.

The reaction equation is given as;

PCl5(g) ⇄ PCl3(g) + Cl2 (g)

Recall that this equation shows the decomposition of phosphorus pentachloride.

We have the following equilibrium concentrations;

[PCI5]= 0.0095 M

[PCI3] = 0.020

[CI2] = 0.020 M

The equilibrium constant, K is obtained from;

K =  [PCI3]  [CI2]/[PCI5]

K = [0.020]^2/[0.0095]

K = 0.042

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Help me:) please and thanks! Part 3

Answers

Answer:

then this picture 11 Venkat and one person is

Explanation:

join date 20th December is not a problem with the topic of your name and address of the topic of your name and address of the topic of your name and address of the topic of your life in general is not available in the equation is the topic of your name and address

so nothing in this picture .

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