Which of the following identifies the most important reason why the percentage of deaths due to infectious diseases dropped from 1970 to 2015?
Group of answer choices

A.The number of people living in poverty fell as nations became increasingly more developed.

B.More people moved into urban areas, and fewer people remained in disease-prone rural areas.

C.More children were immunized against the major infectious diseases.

D. The use of pesticides became increasingly effective at killing biological threats.

Answers

Answer 1

Answer:

A

Explanation:

I choose A people in one hand really have to come together and make this world a strong, better, and brighter place.


Related Questions

A cell has a 1% salt concentration. It is placed into a solution containing a 10% salt concentration.
What will happen to the cell?
Choose 1 answer:

Water will move out of the cell, causing it to swell.

Water will move into the cell, causing it to shrink.

Water will move into the cell, causing it to swell.

Water will move out of the cell, causing it to shrink.

Answers

Answer:

Water will move out of the cell, causing it to shrink.

Explanation:

When something with a low salt concentration is placed in a higher concentration of salt, the salt in the solution will try to suck out the water in the cell. Just remember why we hate salt, because it sucks! There's a little joke to help u remember. Thanks, Ms. Hoj :)

Answer:

CORRECT (SELECTED)

Water will move out of the cell, causing it to shrink.

Explanation:

The cell has lower concentration of solute and a higher concentration of water than the solution it is placed in. This means that water will move out of the cell, causing it to shrink.

help needed plsss !

Answers

Answer:

b. G

Explanation:

In RNA transcription, uracil pairs with adenine instead of thymine.

What is the purpose of the ATP and NADPH produced in the light reactions of photosynthesis?
A. to transfer light energy to excited electrons
B. to stop the electron transport chain
C. to act as carrier proteins in inner mitochondrial membranes
D. to transfer energy to compounds forming three carbon sugars

Answers

Answer: D. to transfer energy to compounds forming three-carbon sugars

Explanation: ATP and NADPH are produced in the light reactions by
when energy absorbed from the sun is conserved as ATP and NADPH. ATP and NADPH generated in the light reactions of photosynthesis are used to synthesize carbohydrates from carbon dioxide and water. The ATP and NADPH are used to reduce CO2 to triose phosphate which can be used to produce glucose. Green plants contain unique enzymatic machinery in their Chloroplasts which catalyzes the conversion of carbon dioxide to simple organic compounds in a process known as CO2 assimilation or carbon fixation. In this carbon fixation reactions, ATP and NADPH is used to drive the incorporation of carbon dioxide into ribulose 1,5-bisphosphate to produce glyceraldehyde 3-phosphate (a 3-carbon sugar) in a series of enzyme catalyzed reactions.

PLEASE HELPP. 20 POINTS
Brandy knows that chromosomes behave differently in meiosis and mitosis. What do chromosomes do in meiosis but not in mitosis?


Each chromosome makes a copy.

The homologous chromosomes form pairs.

Chromosomes line up in the middle of the cell.

Chromosomes condense or shorten up before cell division begins.

Answers

Answer:

It's B

Explanation:

"The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred. The events that occur in meiosis but   not   mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.

Answer:

The homologous chromosomes form pairs.

Explanation:

During mitosis, the original cell produces two daughter cells. How many daughter cells will be produced if 250 mouse cells undergo mitosis?

Answers

Answer:

There would be 500 daughter cells if 200 mouse cells went through the process of mitosis. (If that's what your asking)

Explanation:

During mitosis, the organism (which would be an asexual producer) doubles the amount of chromosomes and they divides the doubled number by two. So the organism will always end up with two daughter cells with the same number of chromosomes as itself. (That is the way with asexual producer's-their offspring is always an exact replica of the first). Now, if you take one mouse, it would end up with 2 daughter cells. If 250 mice reproduce, each with two daughter cells, then there would be 500 daughter cells in total, because you would multiply 2 by 250.  

The number of daughter cells that will be produced is;  500 daughter cells

Mitosis is a process of cell replacement or cell growth whereby a cell divides into two exact daughter cells containing the same number of chromosomes each as the number of chromosomes contained in the parent cell.

Given that the original cell produces two daughter cells, when 250 mouse cell undergoes this process we will have

250 * 2 = 500 daughter cells.

Hence we can conclude that the number of daughter cells that will be produced is 500 daughter cells

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The diagram shows the karyotype of a female with Patau syndromePatau syndrome is known as trisomy 13 and is caused by the presence of three copies of chromosome 13. Which term best describes the cause of Patau syndrome?

Answers

Answer:

Its D your welcome.......

Explanation:

What percent will have spots ?
25 %
0 %
50

Answers

About 50% will have spots

Which of the following is always true of two organisms in
the same taxonomic class?

A.They can breed with one another

B.They have certain physical features in common

C.they evolved at the same time

D.they live in the same ecosystem​

Answers

Answer:

they can breed with one another, they have certain physical features in common, they evolved at the same rate, they live in the same ecosystem. Lions and house cats share common features, but cannot breed with one another.

Explanation:

They share a common ecology, they may breed with one another, share some physical characteristics, evolve at the same rate, and inhabit the same ecosystem, hence option D is correct.

What are the taxonomic classes?

If two species are members of the same class, they are also members of the same higher-level taxon. They share the same phylum and kingdom in this instance.

Kingdom, phylum or division, class, order, family, genus, and species are the seven main taxonomic ranks.

The taxon with the greatest number of species is the kingdom. In taxonomy, it is the broadest category into which the creatures can be divided.

The classification of five kingdoms was made by R.H. Whittaker. The kingdoms of Monera, Protista, Fungi, Plantae, and Animalia are included in this classification.

Therefore, option D is correct.

Learn more about a taxon, here;

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What kind of teeth would you expect a badger to have?
adgers are a type of mammal that eats mostly earthworms
and insects. They sometimes eat small mammals, birds,
and reptiles, as well as plant roots and fruit.
some flat and some round
all flat
some sharp and some flat
all sharp

Answers

El tejón común, europeo o eurasiático (Meles meles), también conocido como tasugo,6​ es una especie de mamífero carnívoro de la familia Mustelidae. Es de tamaño medio y propio del Viejo Mundo.

Answer: Some sharp and some flat

Explanation: They eat both plants and animals, and most animals that are omnivores have both sharp teeth for meat, and flat teeth for plants.

Hope this helps :)

Heart muscle cells remain in the Go stage. Why might this be important for
cardiac function?

Answers

Answer:Cardiac Myocyte Cell Cycle Control in Development, Disease and Regeneration

Explanation:hope it helps

Which of these is a function of the placenta?
A To deliver the blastocyst after childbirth
B. To carry nutrients to the cells of the uterus
C. To carry wastes away from the embryo
O D. To develop into fetal reproductive tissues

Answers

Answer:

c

Explanation:

What is currently happening with Mount Etna?

Answers

Answer:

As Italy’s National Institute of Geophysics and Volcanology (INGV) explains on a recent blog post, the nascent eruption began on the night of May 29. Starting off by producing a thick column of ash rising from the New Southeast Crater, it gave way on May 30 to a far more lava-heavy display in the area, featuring two fissures blenching out lava.

Answer:

There is currently no eruptive activity at the volcano involving fresh lava and monitoring signals do not suggest an immediate change likely; only a weak thermal anomaly continues to be present from the southeast crater complex.

Explanation:

New Deal Agency
Goal
Reduce unemployment
Works Progress Administration
Social Security Administration
Prevent poverty among the elderly
Federal Deposit Insurance
Corporation
Protect citizens from bank failures
?
Securities and Exchange
Commission

Which item best completes the chart?

A. Provide nutritious food for the unemployed
B. Ensure mortgages against economic recession
C. Protect again future economic crises
D. Promote foreign trade for American businesses

Answers

Answer: Protect against future economic crises

Explanation:

New Deal Agency in which unemployment is reduced and Social Security Administration prevents poverty among the elderly, protects against future economic crises again, hence option c is correct.

What is New Deal Agency?

The Social Security Administration was founded in 1935 as a separate organization. Its main responsibilities were for public assistance, unemployment insurance, and old-age insurance.

Payroll taxes help to support Social Security, it covers medical expenses, medication, and in some situations, a stipend for the elderly, with New Deal Agency.

Therefore, protection from future crises in the New Deal Agency for Social Security completes the chart, hence option c is correct.

Learn more about Social Security, here:

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If you could repeat the experiment and make it better, what would you do differently and why?

Answers

Answer:

Nothing different, perform the same thing and see if I get the same results.

Explanation:

Answer:

Nothing different, perform the same thing and see if I get the same results.

Explanation:

Name 5 Dinosaurs Related to Tyrannosaurus rex and Speed also Hight​

Answers

Answer: Spinosaurus Gigantosaurus Allosaurus Tyrannosaurs and Titanosaur.  PLEASE GIVE ME BRAINLIEST

Explanation:  Saurischian Height Length Weight

Acrocanthosaurus (top-spined lizard) 19 ft. 5.8 m 40 ft. 12.2 m 6,000lbs 2,722kg.

Albertosaurus (Alberta lizard) 15 ft. 4.6 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Allosaurus (other lizard) 17 ft. 5.2 m 40 ft. 12.2 m 4,000lbs 1,814kg.

Apatosaurus (deceptive lizard) 15 ft. 4.5 m 75 ft. 22.9 m 66,000lbs 29,937kg.

Archaeopteryx (ancient wing) 1 ft. 0.3 m 3 ft. 0.9 m 2lbs 0.9 kg.

Argentinosaurus (Argentina lizard) 70 ft. 21.4 m 120 ft. 36.6 m 220,000lbs 99,792kg.

Baryonyx (heavy claws) 6 ft. 1.8 m 30 ft. 9.1 m 4,000lbs 1,814kg.

Brachiosaurus (arm lizard) 50 ft. 15.2 m 100 ft. 30.5 m 100,000lbs 45,360kg.

Ceratosaurus (horned lizard) 13 ft. 4.0 m 20 ft. 6.1 m 3,000lbs 1,361kg.

Coelophysis (hollow form) 3 ft. 0.9 m 9 ft. 2.7 m 100lbs 45.5kg.

Compsognathus (elegant jaw) 2 ft. 0.6 m 3 ft. 0.9 m 8lbs 3.6kg.

Deinonychus (terrible claw) 5 ft. 1.5 m 9 ft. 2.7 m 175lbs 80kg.

Diplodocus (double beam) 24 ft. 7.3 m 89 ft. 27.1 m 50,000lbs 22,680kg.

Dromiceiomimus (emu mimic) 5 ft. 1.5 m 11 ft. 3.4 m 220lbs 100kg.

Gallimimus (fowlmimic) 8 ft. 2.4 m 18 ft. 5.5 m 260lbs 118kg.

Mamenchisaurus (Mamenchi lizard) 35 ft. 10.7 m 69 ft. 21.0 m 60,000lbs 27,216kg.

Megalosaurus (big lizard) 12 ft. 3.7 m 26 ft. 7.9 m 2,000lbs 907kg.

Microvenator (small hunter) 2.5 ft0.8 m 4 ft. 1.2 m 14lbs 6.4kg.

Ornithomimus (bird mimic) 8 ft. 2.4 m 15 ft. 4.6 m 300lbs 136kg.

Oviraptor (egg robber) 3 ft. 0.9 m 5 ft. 1.5 m 80lbs 36kg.

Plateosaurus (flat lizard) 7 ft. 2.1 m 26 ft. 7.9 m 4,000lbs 1,814kg.

Saurornithoides (narrow-clawed lizard) 3 ft. 0.9 m 6.5 ft. 2.0 m 60lbs 27kg.

Seismosaurus (tremor lizard) 84 ft. 25.6 m 150 ft. 45.7 m 200,000lbs 90,720kg.

Spinosaurus (spiny lizard) 8 ft. 2.4 m 40 ft. 12.2 m 14,000lbs 6,350kg.

Supersaurus (super lizard) 66 ft. 20.1 m 100 ft. 30.5 m 120,000lbs .54,432kg.

Tyrannosaurus (tyrant lizard) 23 ft. 7.0 m 50 ft. 15.2 m 14,000lbs .6,350kg.

Ultrasauros (ultra lizard) 53 ft. 16.2 m 100 ft. 30.5 m 140,000lbs .63,504kg.

Velociraptor (swift robber) 2 ft. 0.6 m 6 ft. 1.8 m 250lbs .113kg.

   View printable version of table.

Ornithischian Height Length Weight

Ankylosaurus (armored lizard) 7 ft. 2.1 m 35 ft. 10.6 m 10,000lbs 4,536kg.

Camptosaurus (bent lizard) 10 ft. 3.0 m 23 ft. 7.0 m 4,000lbs 1,814kg.

Chasmosaurus (cleft lizard) 6 ft. 1.8 m 17 ft. 5.2 m 3,000lbs 1,361kg.

Claosaurus (broken lizard) 6 ft. 1.8 m 12 ft. 3.7 m 2,000lbs 907kg.

Corythosaurus (helmet lizard) 16 ft. 4.9 m 30 ft. 9.1 m 8,860lbs 4,019kg.

Dravidosaurus (Dravidanadu lizard) 4 ft. 1.2 m 10 ft. 3.0 m 2,000lbs 907kg.

Dryosaurus (oak lizard) 6 ft. 1.8 m 13 ft. 4.0 m 2,000lbs 907kg.

Euoplocephalus (well-armored head) 4 ft. 1.2 m 17 ft. 5.2 m 7,000lbs3,175kg.

Hadrosaurus (bulky lizard) 15 ft. 4.6 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Hypsilophodon (high-crested tooth) 3 ft. 0.9 m 7.5 ft. 2.3 m 140lbs 64kg.

Iguanodon (iguana tooth) 18 ft. 5.5 m 30 ft. 9.1 m 10,000lbs 4,536kg.

Kentrosaurus (spiky lizard) 5 ft. 1.5 m 17 ft. 5.2 m 4,000lbs 1,814kg.

Lambeosaurus (Lamb's lizard) 18 ft. 5.5 m 30 ft. 9.1 m 14,000lbs 6,350kg.

Nodosaurus (node lizard) 6 ft. 1.8 m 18 ft. 5.5 m 6,000lbs 2,722kg.

Ouranosaurus (brave monitor lizard) 10 ft. 3.1 m 23 ft. 7.0 m 8,000lbs 3,629kg.

Pachycephalosaurus (thick-headedlizard) 10 ft. 3.1 m 18 ft. 5.5 m 4,000lbs 1,814kg.

Protoceratops (first horned face) 2 ft. 0.6 m 6 ft. 1.8 m 900lbs 408kg.

Shantungosaurus (Shanshan lizard) 25 ft. 7.6 m 51 ft. 15.5 m 14,000lbs 6,350kg.

Styracosaurus (spiked lizard) 7 ft. 2.1 m 17 ft. 5.2 m 6,000lbs 2,722kg.

Stegosaurus (plated lizard) 11 ft. 3.4 m 30 ft. 9.1 m 6,000lbs 2,722kg.

Tenontosaurus (tendon lizard) 10 ft. 3.0 m 23 ft. 7.0 m 4,000lbs 1,814kg.

Torosaurus (bull lizard) 7 ft. 2.1m 21 ft. 6.4 m 12,000lbs 5,443kg.

Triceratops (three-horned face) 9.5 ft. 2.9 m 26 ft. 7.9 m 14,000lbs 6,350kg.

The above answer is actually very incorrect as it names various species from various different groups and species.

When looking for related species to tyrannosaurus you should look under Tyrannosauridae to get an accurate answer.

Tyrannosaurs Rex - 40-42 ft long, 8.4-14 tons

1. Tarbosaurus - 33-39ft long, 4-5 metric tons

2. Albertosaurus - 30-32ft long, 4 tons

3. Gorgosaurus - 26-30ft, 2.8-2.9 tons

4. Daspletosaurus - 26-30ft, 2.5 tons

5.Zhuchengtyrannus - 33-39ft, 6 tons

Hope this helps. :)

Are people producers or consumers? Explain your answer.

Answers

Answer:

People are consumers because they can't produce their own foods so they eat foods made by other living things.

Explanation:

In what ways did Charles Lyell impact Charles Darwin’s theory of evolution? What type of relationship did Darwin have with Charles Lyell? How did Darwin learn about Charles Lyell's ideas?

Answers

Answer:

They both believed that continuous and gradual change is law of nature

Explanation:

Charles Lyell's “Principles of Geology “ encouraged Charles Darwin to think of evolution of living organisms as a slow process just like the slow geological processes taking place since millions of years. As per Charles, the slow and little contribution of continuous geological events shaped the present geological attributes of the earth. Likewise Charles Darwin’s theory of evolution also earmarked accumulated effects of small gradual changes over immense spans of time. They both believed that continuous and gradual change is law of nature.  

which of the following definitions is the correct description of symbiosis

Answers

Answer:

A symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.

symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.

In pea plants, green seeds (G) are dominant and yellow seeds (g) are recessive. Two heterozygous plants are crossed. If 60 offspring are produced from this cross, how many of them would you expect to have green seeds? *

Answers

Answer:

I dont know like 120???? use google or socratic

What are cilia?
A. false feet
B. skinny tails
C. hairlike projections
D. temporary extensions

Answers

Answer:

c. hairlike projections

Explanation:

it sweeps mucous and dirt out if our lungs.

Hope this helps :)

Explain why the forest ecosystem is a system.

Answers

A forest ecosystem is a natural woodland unit consisting of all plants, animals and micro-organisms (Biotic components) in that area functioning together with all of the non-living physical (abiotic) factors of the environment. The forest ecosystem is very important.

Answer:

Like all ecosystems, forests consist of many interacting parts. They include living organisms such as plants, animals, and fungi. Forests also include non-living components that these organisms depend on, such as the soil and climate. As stated in the article, one change, such as pollution, can cause a ripple effect through the ecosystem. Dying lichens are one of the earliest signs of pollution. In turn, the loss of the lichens can cause a decline in species that rely on the lichens for survival.

Explanation:

That is the sample answer.

S-waves arrive at a seismic station?

First
Second
Third
Fourth

Answers

Answer:

First

Explanation:

S-waves arrive first at a seismic station

write a paragraph to show your knowledge about diabetes that include the following terms:
Glucose, Glucagon, Pancreas, Negative Feedback, Homeostasis, and Liver

Answers

Answer:

Glucose is a simple sugar molecule that helps play a role in high/low blood sugar levels. If your blood level is too low Glucagon is released to increase your blood sugar and if it’s too high Insulin is secreted to lower blood sugar; both Insulin and Glucagon are hormones.This being said these two hormones are secreted by the pancreas. Both of these two hormones are examples of negative feedback leading to a stability In homeostasis. It is regulated by the liver, however if homeostasis is disrupted the body will stop functioning properly leaving no insulin to be produced. Therefore the end result is Diabetes

As water passes into the guard cells, the pore opens. explain why.

Answers

Answer:One of the most important functions of guard cells is to control the closing and opening of the stoma/pores. While the opening of these pores allows water to be released into the environment, it also allows carbon dioxide to enter the cell for photosynthesis (as well as the release of oxygen into the environment).

Explanation:

Answer: guard cells are a pair of cells that surround each of the stoma openings. to open the cells, they have to be triggered by one of many possible environmental or chemical signals. these can include more sunlight or higher than normal levels of carbon dioxide within the cell.

Explanation:

they open to regulate the gas and moisture exchange, hope that this is what you were looking for :)

What is the difference between weather and climate?

Answers

Weather relates to the short term natural occurrences (like rain, storms, sunshine, etc) while climate refers to the long term, general state of a biosphere (like the average temperatures in certain season, how much and how periodically in rains over a long period of time, etc)

Hope this helped.

The top, exposed layer a has undergone
A. an uncomformity
B. erosion
C. tilting
D. folding
P.S. I NEED THIS LIKE NOW!
I WILL MARK BRAINLIEST​

Answers

I think it is erosion

Science Work, Help Please!

1. A. What is diffusion?

1. B. Use diffusion to
explain what happens when you drop a
sugar cube into a mug of hot tea.

2. A. What is osmosis?

2. B. Describe how water molecules
move through the cell membrane during
osmosis.


Answers

Answer:

Diffusion is the spreading of something more widely. When you drop a sugar cube in hot tea the sugar cube spreads out and the sugar starts to dissolve in the tea. Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane. If the concentration of water molecules ouside the cell is lower than the concentration of water molecules outside the cell then the water moves out through osmosis. Water travels through the cell membrane.

Diffusion is the movement of particles from a higher concentrated area to a lower concentrated area
Omosis is the movement of solvent particles across a sermipermeable membrane from a dilute solution into a concentrated solution

True or false determine

Answers

Answer:

False. This is because multiple genotypes can determine a phenotype

A capital letter indicates a/an ______ allele. A) inferior
B) dominant C) superior D) recessive E) mutant

Answers

Answer:

(B)

Explanation:

Most people working with Punnett squares mark a capital letter as a dominant allele.

A recessive allele would be marked by a lowercase letter.

Which two organ systems work together to provide a structural framework for movement?
A. skeletal and muscular
B. muscular and endocrine
C. integumentary and skeletal
D. endocrine and integumentary

Answers

Answer:

Skeletal and Muscular

Explanation:

They help work together to provide support to maintain the body together and to help move.

PLZ MARK BRAINLIEST!!!

Answer:

A. Skeletal and Muscular

Other Questions
The scores on one portion of a standardized test are approximately Normally distributed, N(572, 51). a. Use the 68-95-99.7 rule to estimate the range of scores that includes the middle 95% of these test scores. b. Use technology to estimate the range of scores that includes the middle 90% of these test scores. Which of the following is not a benefit of wildfires?A. Maintain forest clearingsB. Eliminate invasive plant species C. Allow some tree seeds to germinate D. Reduce leaf litter You walk in a room and on the bed there are 2 dogs, 4 cats, one giraffe, 5 cows and a duck, 3 chickens flying above; how many legs are on the floor? Pythagorean Theorem: Jason only has room for a TV that is less than 30^ prime prime wide.Find the width of the TV Which traits would Aristotle have used to classify sharks? Choose more than one answer. WILL MARK BRAINLIEST!I thought of a three-digit number. If I add all the possible two-digit numbers made by using only the digits of this number, then one third of this sum is equal to the number I thought of. What is the number I thought of? Find , to the nearest tenth of a foot , the height of the tree represented in the accompanying diagram. What is the affirmative command for Usted of SERVIR (to serve) Pendulum clock. Your friend is trying to construct a clock for a craft show and asks you for some advice. She has decided to construct the clock with a pendulum. The pendulum will be a very thin, very light wooden bar with a thin, but heavy, brass ring fastened to one end. The length of the rod is 80 cm and the diameter of the ring is 10 cm. She is planning to drill a hole in the bar to place the axis of rotation 15 cm from one end. She wants you to tell her the period of this pendulum. Do you think that climate change has been presented to you as doom and gloom throughout your life? Explain. How does your heart rate affect the rate at which red blood cells travel throughout your body? PLEASE HELP ME QUICK!! A sample of air has a volume of 140.0 mL at 67C. To what temperature must the gasbe lowered to reduce its volume to 50.0 mL at constant pressure? Please help me now plz I will mark you brainliest The object below is a cubical lunch box having each edge as 10 cm.Find its surface area. A600 cm2 B360 cm2 C300 cm2 D36 cm2 Assume that Parker Company will receive SF200,000 in 360 days. Assume the following interest rates: the 360-day borrowing rate in U.S. is 7% while the 360-day borrowing rate in Switzerland is 5%. The 360-day deposit rate in U.S. is 5% while the 360-day deposit rate in Switzerland is 4%. Assume the forward rate of the Swiss franc is $0.50 and the spot rate of the Swiss franc is $0.48. If Parker Company uses a money market hedge, it will receive ____ in 360 days. A man wants to hike two trails. The length of one trail is 7.709 km. The length of the other trail is 9.0309 km. What is the total length of the two trails? plz halp meh!!!!!!! Which shows how the distributive property can be used to evaluate 7x8 4/5? What are the answers on the sheet to the math paper "What did the teenage yardstick say to its parents? " Part B which details from the text best supports the answer to part a former red bow