what is PM 2.5 and how does it affect people?​

Answers

Answer 1
Particles in the PM 2.5 size range are able to travel deeply into the respiratory tract
Answer 2
Fine particles (PM2.5) pose the greatest health risk. These fine particles can get deep into lungs and some may even get into the bloodstream. Exposure to these particles can affect a person's lungs and heart.

Related Questions

1. Most students in Britain take the GCSE when ____________.

A. They are 11 years old

B. They are 16 years old

C. They finish grade 10

D. They begin grade 11

2. What is the first thing you’ll notice when you visit almost any school in Britain?

A. The school logo

B. The school gate

C. The school playground

D. The school uniform

3. What do most teenagers in Britain prefer to wear?

A. Trendy labels

B. Expensive uniforms

C. Fashionable hats

D. Economical trainers

4. The word ‘highlight’ in paragraph 2 is closest in meaning to __________ .

A. Confuse

B. Remark

C. Emphasise

D. Decrease

5. According to the passage, which of the following statements is NOT true?

A. Students in Britain can take 8 subjects at the GCSE.

B. Most British teenagers spend 2-3 hours watching TV after school.

C. Most 16-year-old students in Britain don’t like school uniforms.

D. Many British teenagers judge their friends by their shirts or trainers.

Answers

Answer:

1.c

2.d

3 .d

4.a

5.c

this is all I got

Which of the following terms is the life
cycle of a living cell?
A. g1
B. cell cycle
C. interphase
D. mitosis

Answers

Answer:

cell cycle is the term of the life cycle of a living cell

scientists who believe global warming is happening would agree with which of the following statements?
(A) There are few, if any, misconceptions about global warming
(B) Most scientists agree that global warming is occuring
(C) Human activity is a minor cause of global warming.
(D) There is little humans can do to stop global warming

Answers

Answer:

B. Most scientists agree that global warming is occurring.

Explanation:

There is a large deal of misconception in the public surrounding global warming. Human activity is the primary cause of global warming, and therefore, there are many actions that humans could take to stop global warming.

the scientific name of the great egret has recently been changed from Casmerodius albus to Ardea alba. What is a possible reason for the reclassification of egrets?
A) Allopatric speciation
B) Discovery of a different ancestor
C) A change in the mating behaviors
D) A change in their habitat and geological range

Answers

Answer:

B) Discovery of different ancestry

Explanation:

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Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes closest to explaining the basis for placing these organisms in different taxa, well before relevant data from molecular systematics became available?

Answers

Answer:

Due to other differences.

Explanation:

The plants, fungi, and prokaryotes all have cell walls, we place them in different taxa because of the other differences such as mobility, mode of nutrition etc. Plants and fungi are not mobile means can not move from one place to another whereas prokaryotes are mobile. Fungi and prokaryotes are heterotrophs means that feed on other organism whereas plants are autotrophs means make their own food. There is also difference in their cell wall i.e. the cell of plants is composed of cellulose, the cell wall of prokaryotes especially bacteria is composed of peptidoglycans and the cell wall of fungi is composed of chitin.

different between dominant character and recessive character​

Answers

Dominant character:are always expressed when the connected allele is dominant,even if only one copy of the dominant trait exits.

Recessive character:are expressed only if both the connected allele are recessive.

Answer:

Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.

Explanation:

If some traits are absent or not expressed, but found in the parent, then the allele is said to be recessive.

Difference Between Recessive and Dominant Traits

DOMINANT

Dominant Trait Recessive Trait

Dominant allele is denoted by a capital letter

RECESSIVE

Recessive allele is denoted by a small letter

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An actin-binding protein called cofilin binds preferentially to ADP-containing actin filaments rather than ATP-containing actin filaments. Based on this preference, which is true? Question 7 options: Cofilin binds to the plus ends of treadmilling actin filaments. Cofilin competes with profilin for binding to actin. Cofilin binds to older actin filaments. Cofilin binds to the plus ends of actin filaments.

Answers

Answer:

Cofilin binds to older actin filaments

Explanation:

Microfilaments (also called actin filaments) are a class of protein filament common to all eukaryotic cells, which consist of two strands of subunits of the protein actin. Microfilaments form part of the cell's cytoskeleton and interact with the protein myosin in order to allow the movement of the cell. Within the cell, actin may show two different forms: monomeric G-actin and polymeric F-actin filaments. Microfilaments provide shape to the cell because these filaments can depolymerize (disassemble) and polymerize (assembly) quickly, thereby allowing the cell to change its shape. During the polymerization process, the ATP that is bound to G-actin is hydrolyzed to ADP, which is bound to F-actin. ATP-actin subunits are present at the barbed ends of the filaments, and cleavage of the ATP molecules produces highly stable filaments bound to ADP. In consequence, it is expected that cofilin binds preferentially to highly stable (older) filaments ADP-actin filaments instead of ATP-actin filaments.

carbohydrate are store in animal cell in the form of​

Answers

Answer:

molecule glycogen

Plants store carbohydrates in long polysaccharides chains called starch, while animals store carbohydrates as the molecule glycogen.

Glycogen molecule, which is found in the cytosol of the cell

Tania looks at several different multivitamins in the store and notes that there are many different formulations with
varying amounts of several types of vitamins. She would like to choose a brand that only has the essential vitamins
that humans need to consume.
What are the vitamins that Tania should verify are in the product that she purchases?
O vitamins A, B, C, D, E, and K
O vitamins A, B, C, E, and K
O vitamins A, B, C, D, and E
O vitamins A, B, C, D, E, F, and K

Answers

The answer is A.

There are 13 essential vitamins. Vitamins A, the multiple B vitamins, C, D, E, and K.

pls answer this question i think easy

Answers

Answer:c

Explanation:it must be c if im wrong then sue me!

Answer:

B. Food is broken into simpler molecules.

Explanation:

these small molecules are; proteins, amino acids, glucose, e.t.c

Which of the following represents a mutualistic relationship?
1 point
Both organisms benefit
Both organisms do not benefit
One benefits and the other is unchanged
One benefits and the other is harmed

Answers

Answer: both organisms benefit

Explanation: mutualistic means that it is beneficial to both organisms involved

Hope that helped :)
Answer: Both organanisums benefit each other.
Explanation: Think of it as a business deal.If both the organisms give each other vital needs to survive,then we call that a mutual relationship. Example: rhizobium gives plant converted nitrogen and the plant give the bacteria the food water etc.

In the 1950s the structure of DNA was discovered by using models and x-ray chromatography currently science has used advanced technology to completely map out the genes in a human's body. What would be the best advantage of using this information?

Answers

Answer:

Gene therapy to correct defective genes that cause diseases.

Explanation:

Gene therapy refers to the procedure that involves the introduction of nucleic acids (DNA or RNA) into the cells of an organism for the purpose of correcting abnormalities, such as a mutations or in other words to treat a genetic disease.Gene therapy entails bringing a normal and functional gene known as a trans-gene into a cell with altered gene. Another method can bring RNA capable of partially regulating or blocking the expression of an altered gene.The nucleic acids are introduced into the patient's cells by means of a viral vector or injected directly into the cells in the form of naked DNA.

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Is there any plastid in mango seed?

Answers

there are no plastid in a mango seed because

predict what happen to the human and the plants if the transport system are affected​

Answers

I think we'll be scared and panicked and some people will die of overthinking

what's the cell wall of a onion made up of?

Answers

Answer:

Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape.

Answer:

cell membrane,cytoplasm,nucleus and a large Vacuole.

Explanation:

An onion is a multicellular(consisting of many cells)plant organism.As in all plant cells,the cell of an onion peel consists of a cell wall.

Lizard is a poikilothermic animal give reason please​

Answers

Answer:

Both reptiles and amphibians are poikilothermic, which means that they cannot regulate their own body temperatures internally 

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Poikilothermic animals include types of vertebrate animals, specifically some fish, amphibians, and reptiles, as well as many invertebrate animals.

Reptiles are cold-blooded, or ectothermic, animals. This means that they cannot produce heat in their own bodies, and have to rely on their surroundings to keep warm. This is why most reptiles are found in hot or warm climates. Reptiles often bask in the sun to get warm.

Both reptiles and amphibians are poikilothermic, which means that they cannot regulate their own body temperatures internally as birds and mammals do.

Convert 90 centuries to minutes using the method of dimensional analysis.

Answers

[tex]\huge\text{Hey there!}[/tex]

“[tex]\large\text{Convert 400 mm to m}[/tex]”

[tex]\large\text{Just simply divide 400 by 1,000 and you will have your result.}[/tex]

[tex]\mathsf{\dfrac{400}{1,000}}[/tex]

[tex]\mathsf{= \dfrac{400\div200}{1,000\div200}}[/tex]

[tex]\mathsf{400\div 200 = \bf 2}[/tex]

[tex]\mathsf{1,000 \div 200 = \bf 5}[/tex]

[tex]\mathsf{= \bf \dfrac{2}{5}}\rightarrow\mathsf{\bf 0.4}[/tex]

[tex]\boxed{\huge\textsf{Therefore, your ANSWER is: \boxed{\bf \dfrac{2}{5} \ or \ 0.4}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Why does scattering of light occur ?

Answers

Mie scattering is caused by pollen, dust, smoke, water droplets, and other particles in the lower portion of the atomosphere

define and describe osmosis​

Answers

Answer:

Movement of a solvent (such as water) into a solution with a higher solvent concentration by means of a semi-permeable membrane (as from a live cell), which tends to equal solute concentrations in the membrane on both sides.

Explanation:

Osmosis, the spontaneous transition, distribution, or diffusion of water and other solvents over a semipermeable membrane. In 1877, a German physiologist, Wilhelm Pfeffer, researched the process, which is important in biology.

Osmosis is the passage of water down its concentration gradient, across a semi-permeable membrane. An everyday example is a plastic wrap in your kitchen: it allows air and water vapor to move across it, but no water or food. The membranes of cells are semi-permeable, too.

Whats a hypothesis for “Which bait works better for a homemade fly trap?”

Answers

Answer:

If I use the correct bait, then I will have a successful homemade fly trap.

Explanation:

A hypothesis is always an "if, then" statement

The purpose of Mendel's experiments with dihybrid crosses was to determine
whether:
A. an F2 generation could be produced from the Fi offspring.
B. one of two traits could be transformed by DNA.
O c. one trait would affect how another is inherited.
D. traits are controlled by more than one gene.

Answers

Answer:

C. one trait would affect how another is inherited

Explanation:

Use the drop-down menus to complete the hypothesis of the first group of researchers. During a drought, the decrease in rainfall will reduce the amount of vegetation that can grow and increase the occurrence of natural fires, so an elevation in Select… and a reduction in Select… should be found in the cores.

Answers

Answer:

Microscopic charcoal, Vegetation.

Explanation:

As the researchers conducting research in the Nile region identified that an increase in temperatures leads to an increase in droughts and reduction of natural vegetation and thereby the chances of the occurrence of natural fires.

Name the following.

(a) Tissue that forms the inner lining of our mouth.

(b) Tissue that connects muscle to bone in humans.

(c) Tissue that transports food in plants.

(d) Tissue that stores fat in our body.

(e) Connective tissue with a fluid matrix.

(f) Tissue present in the brain​

Answers

a) epithelial tissue
b) tendon
c) phloem
d) adipose tissue
e) blood
f) gray matter and white matter.

What is the best description of connective tissue? Question 3 options: All of its cells rest on a basal lamina. All of its cells associate via cadherins in their plasma membrane. All of its cells are electrically connected via gap junctions. All of its cells are sparsely distributed in the extracellular matrix.

Answers

Answer:

Connective tissue is a group of tissues in the body that keep the body and its organs in shape while also providing cohesion and internal support.

All of its cells exist sparsely distributed in the extracellular matrix is the best description of connective tissue.

What is connective tissue?

Tissue that sustains, protects and provides structure to other tissues and organs in the body. Connective tissue also stores fat, permits the movement of nutrients and other substances between tissues and organs, and allows the repair of damaged tissue. Connective tissue exists created up of cells, fibers, and a gel-like substance.

Connective tissue is discovered in between other tissues everywhere in the body, including the nervous system. The three outer membranes (the meninges) that surround the brain and spinal cord exist composed of dense inert connective tissue.

Connective tissues bind systems together, form a framework and support for organs and the body as a whole, store fat, transport substances, defend against disease, and assist restoration of tissue damage.

Hence, All of its cells exist sparsely distributed in the extracellular matrix is the best description of connective tissue.

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Why ulva is not placed in kingdom plantae

Answers

Answer:

Because Ulva is an algae. Algae belongs to kingdom Protista.

Explanation:

Ulva is a Macroalgae because it's not microscopic.

Macroalgae is not considered as a plant due to their structure. Macroalgae do not have specialized organs and tissues, and they are not vascularized. They also do not have the capacity to form a structure with flowers, leaves, roots or a stem.  

Some of the cell membrane functions are similar to the ________ of the body.

Answers

the skin has cells like that

Question 6 of 25
Which is an example of a vestigial structure?
A. Raccoon tail
B. Fish gills
C. Whale pelvis bone
D. Human arm
help:,)

Answers

the answer for your question is D

A farmer decides to try to increase his profits by mating his two goats that produce the most milk together. The farmer’s descendants continue the process and over 400 years the family produces goats that make more milk than any in the country. Eventually the goats change enough that they are designated a new species. This is an example of:

A. Artificial selection
B. Acquired characteristics
C. Disruptive selection
D. Natural selection

Answers

D. Natural Selection

Answer:

A.is the correct answer

Explanation:

People have been doing asimple form genetic enineeringfor thousands of years. This is called selective breeding. Selective breeding, or artifical selection, is a process where people try and improve plants and animals by selecting and breeding those that have desireable charactistics.

For example, a farmer might choose from his two largest cattle in his herd and breed them  together so that the offspring will be even bigger and produce more meat.

A mutation occurred in the following DNA sequence AGCCTAGCC and the mutated form is now AGCCTTAGCC. Which of the following correctly describes the result of this mutation?

1.A deletion occurred so all of the amino acids added after the mutation may be wrong.

2.An insertion occurred so all of the amino acids added after the mutation may be wrong.

3.A substitution occurred so all of the amino acids added after the mutation will definitely be wrong.

4.An insertion occurred so all of the amino acids added after the mutation definitely will be different.

Answers

Answer:

Explanation:

1.A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand.

2.This type of variant results in a shortened protein that may function improperly, be nonfunctional, or get broken down. An insertion changes the DNA sequence by adding one or more nucleotides to the gene.

3. A substitution mutation can cause the following: Change in the coding of amino acids codon to a particular stop codon resulting in an incomplete protein, which is usually non-functional. Can cause Silent mutations where a codon change can encode the same amino acid resulting in no changes in the protein synthesized.

4. when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.

PLSSS HELLLPP- Which of the following measurements uses a derived unit? O volume O mass O length O time​

Answers

Answer:

Volume

Explanation:

volume=length ×length ×length

The metric system is the system used for the measurement. It measures the mass, length, weight, time, etc. The unit of volume is a derived unit. Thus, option A is correct.

What is a derived unit?

A derived unit is a unit used to measure and estimate the substance by using the basic or the fundamental metric unit system. It is based on units of the fundamental system.

The fundamental units include mass, temperature, time, luminous intensity, length,  electric current, and amount of substance. On the other hand, derived units result from a combination of base units.

A volume is a derived unit as it came from the fundamental unit of length as,

Volume = length × length × length

= cm × cm × cm

= cm³

Therefore, option A. volume is a derived unit.

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Other Questions
Scores on a national English test are Normally distributed, with a mean score of 510 and a standard deviation of 75. Sixty-eight percent of English tests were less than which score, rounded to the nearest whole number?A) 475B) 529C) 545D) 561 For each sentence, fill in each blank with the simple past or simple present form of the verb inparentheses.1. More than 50 years after President Kennedy______(sign) the Equal Pay Act, thegap between salaries for men and women________(remain) a problem today.2. Last year's study__________(find) that in the last decade the pay gap_________(become) greater the longer a person was in the workforce.3. The United States is one of few countries in the developed world that currently________(use) the death penalty. Mexico, its neighbor to the south,_______(end) the death penalty in 2005.4. During the 1950s and 1960s, Martin Luther King, Jr.,______(lead) the civil rightsmovement in the United States. Civil rights______(include) the right to vote, theright to a fair trial, and the right to an education.5. Fifteen nations___________(make up) the UN Security Council. The Security Council____(hold) its first session on January 17, 1946, in London. What is absorption?A. getting rid of the parts of the food that the body couldn'tuseB. absorbing nutrients into the blood stream from the foodthat was eatenC. the breaking down of the food that has entered the bodyD. putting food and drinks into your body Write the number 16,107,320 expanded form. The Canterbury Tales were mostly written in ________ form. - prose - poetry - sonnet - eulogy Explain how 2 polynucleotides can twist helically around each other to form a double helix of DNA? Triangle XYZ is isosceles. The measure of the vertex angle, Y, is twice the measure of a base angle. What is true about triangle XYZ? Select three options. (06.01)Write the following expression in exponential form:1.6 1.6 1.6 1.6 41.6 1.64 1.6 4 1.6 + 4 15. What is the length of segment FG Select all the words that are written correctly.JaponsFrancesoEspaoloJapnFrancsEspaol Examples of people who weren't afraid to take help to succeed The graph of a line is shown below. What is the equation of the line, in slope-intercept form, that is parallel to this line and has a y-intercept of 1? Marcus White has just been promoted to a manager. To give him access to the files that he needs, you make his user account a member of the Managers group, which has access to a special shared folder. Later that afternoon, Marcus tells you that he is still unable to access the files reserved for the Managers group. What should you do Find the unit price of each of the following items Round your answer to the nearest tenthfrozen orange juice16.0% at $2.0112 oz at $1.69 Which statement explains how you could use coordinate geometry to prove that quadrilateral ABCD is a square What would be the name of this compound? rewrite the following sentence after making necessary correctionQ:-he left the place with bag and baggage the temperature of fridge compartment of a refrigerator is set at 8 C . the fridge compartment is set at -10C . what is difference between these temprature sittings Point-Slope Form of a Line Find the total surface area. rectangular prism 4 A. 700 m B. 3,040 m C. 135 m D. 1,308 m