Researchers wanted to prove that breast feeding caused higher IQ scores. In order to control other relevant factors besides breast feeding, what procedure must researchers use

Answers

Answer 1
They must compare a child getting breast feeding and another child that isn’t. Then, they should compare the results of the two children that were being tested on.

The children should both have the same gender so the researchers can be certain and it would be best if they were the same age.

Related Questions

3. Compared to the wavelength of ultraviolet radiation,
the wavelength of infrared radiation is
A) shorter
B) longer
C) the same

Answers

Answer:

the correct answer is Longer

Explanation:

hope this helps

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The Correct choice is ~

Longer

Compared to the wavelength of ultraviolet radiation,

the wavelength of infrared radiation is longer

Based on this information, what is the minimum size of a codon for these hypothetical martian life-forms?.

Answers

Answer:

george is cute

Explanation:

5 A prokaryotic cell is 5.0 um in length. A virus particle is 300 nm in length. How many times larger is the prokaryotic cell compared to the virus particle?
A 2
B 17
C 60
D 167​

Answers

The prokaryotic cell is 17 times larger as compared to the virus particle.

Both values first need to be converted to the same unit.

5.0 um = 5.0 x [tex]10^-^6[/tex] m

300 nm = 3.0 x [tex]10^-^7[/tex] m

Dividing both values:

   5.0 x [tex]10^-^6[/tex] m/3.0 x [tex]10^-^7[/tex] m

                        = 16.667

Hence, the prokaryotic cell is approximately 17 times bigger than the virus particle.

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Helpppoo please no filessss

Answers

Answer:

i can’t see the answer choices

Explanation:

Describe the relationship between the atmosphere and the geosphere regarding the movement of carbon.

Answers

Answer:

Several processes move carbon from the geosphere to the atmosphere. Volcanic eruptions release carbon dioxide from molten rock beneath the earth's surface. The production of cement that's used for homes, skyscrapers, streets and other hardscapes around the world releases an enormous amount of carbon dioxide.

Explanation:

What are villi?



don't spam​

Answers

Answer:

Villi are finger-like outgrowths on the inner walls of the small intestine. The villi increase the surface area for absorption of the digested food.

Answer:

Villi are tiny finger-like projections seen in the small intestine. They are more than millions of villi in the small intestine performing the following functions: The villi absorb nutrients from the food and cause their conversion into glucose.

in turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, what is the probability of an individual offspring having yellow feather?


50%
0
25%
100%

Answers

Answer:

50%

Explanation:

trust me because the heterozygous is so weird but I know this.

In turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, than the probability of an individual offspring having yellow feather is 50%. Thus, option A is correct.

What will be produced in turkeys a dominant gene?

In turkeys a dominant gene, R, produces the familiar bronze color; its recessive allele, r, results in red. Another dominant gene, H, results in normal feathers; its recessive allele, h, produces feathers without webbing, so that they resemble tufts of hairs.

Two bronze turkeys with normal feathers were mated, and their offspring consisted of eight bronze with normal feathers, three bronze with hairy feathers, two red with normal feathers, and one red with hairy feathers.

Since, this offspring received a recessive red, r, allele from each parent and a recessive hairy, h, allele from each parent, both parents must heterozygous for both characters: RrHh.

Therefore, In turkeys the allele for brown feather is dominant to the allele for a yellow feather. if two heterozygous turkeys mate and produce offspring, than the probability of an individual offspring having yellow feather is 50%. Thus, option A is correct.

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The basic pattern of blood flow from the lungs to the rest of the body is:
pulmonary vein; left ventricle; left atrium; vena cava.
O pulmonary artery; left atrium; left ventricle; aorta.
O vena cava; aorta; right ventricle; right atrium.
O pulmonary vein; left atrium; left ventricle; aorta.

Answers

Answer: pulmonary vein; left atrium; left ventricle; aorta

Explanation: I just did this question in the final exam of A&P and it was correct, hope this helps:)

The basic pattern of blood flow from the lungs to the rest of the body is: pulmonary vein; left atrium; left ventricle; aorta. The option (B) is correct.

What are pulmonary vessels?

Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. Your pulmonary veins are part of your body's pulmonary circuit. This is a system of blood vessels that moves blood between your heart and your lungs. This circuit also includes your pulmonary arteries.

For the exchange of gases to occur effectively, the lungs require a dual vascular supply known as pulmonary and systemic circulations. The pulmonary circulation is responsible for bringing deoxygenated blood from the body to the lungs for gaseous exchange and then returning oxygenated blood to the heart.

There are 4 total pulmonary veins—with 2 pulmonary veins coming from each lung, left and right—that empty into the left atrium of the heart.

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What percentage of the earth’s land and what percentage of the earth’s oceans have been disturbed by human activities?

Answers

Answer:

the first 1 :)

Explanation:

A mother has type O blood and a father is heterozygous for type B blood. What are the chances of the offspring having type O blood?

Answers

Answer:

50 percent

Explanation:

O is a recessive trait. The father has a B and an O, using a punnet square you are able to determine that the possible outcomes are BO, BO, OO, and OO

rele existente entre o modo verta do como Loonie na propaganda o trecho que revela a tras de cor Por que algumas partes do dos foram grafadas com as palavra do circunstancia OS orgbos tonponsáveis pela publicação anuncio publicat 10 Qual o tipo discursivo predominante do texto?​

Answers

Answer:

what??speak English please

Explanation:

i don't really understand

I'm sorry I'm really sorry plss

forgive me

Why would you use sodium hydrogen carbonate in an investigation

Answers

Answer:

Investigating photosynthesis. The effect of light intensity on photosynthesis can be investigated in water plants. ... Sodium hydrogen carbonate - formula NaHCO 3 - is added to the water to supply carbon dioxide - a reactant in photosynthesis - to the plant.

Explanation:

hope this helps

What is the role of chromosomes in the cell nucleus?
Explain in 5 - 10 sentences

Answers

Answer:

Chromosomes are tightly packed DNA and proteins. The DNA and proteins take on a tightly coiled structure within the chromosome. The chromosomes are then kept inside the nucleus. Their role is to carry basic genetic material. This provides the cell with genetic information that's used to carry out different cellular functions. These functions include survival, growth, and the ability to reproduce.

Explain how the rate of cooling magma affects the size of
the crystal that form.

Answers

Answer: When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.

When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.

low does natural selection lead to the evolution of a population?

Answers

Explanation:

when natural selection is cartried out it leads to the species being the fittest inorder words it is called survival of the fittest inorder to promote evolution

when two haploid gametes unite, they create a diploid cell called a

Answers

2 haploid gametes combine to produce a diploid zygote

Which of the following statements is true about chromosomes in multicellular organisms?

Choose 1 answer:
A) a chromosome contains numerous DNA molecules.
B) Chromosomes are located in both the nucleus and cytoplasm of the cell.
C) Each chromosome contains a large number of genes.

Answers

Answer:

Im not sure but c?

Answer:

The answer is c :)

Plz help! 15 points

• Would a plant be able to survive if the ground tissue was damaged?

Answers

Answer:  I don’t think so because it needs the carbohydrates produced by the plant.

Explanation: No because the soil would be contaminating the soil until it reaches a point where the soil begins to tear and cracks will open in the soil and the air will be polluted, it would be an uninhabitable planet

wha molecules absorbs sunlight for photosynthesis

Answers

Explanation:

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

Which part of the vascular system functions as a blood reservoir and contains over 60% of the body's blood

Answers

Answer:

Veins are also called capacitance vessels because they contain 60% of the body's blood volume.

Explanation:

Hope I could help.

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1. Transcription happens in the _______ and translation happens at the _________.
a. mitochondria, chloroplasts
b. chloroplasts, mitochondria
c. nucleus, ribosome
d. ribosome, nucleus

2. Proteins are long chains of _________ assembled by _____ bringing them to the ribosomes.
a. nucleotides, mRNA
b. mRNA, nucleotides
c. amino acids, tRNA
d. tRNA, amino acids

3. What are three amino bases on the mRNA strand that codes for a specific amino acid is? What is the complementary bases on a tRNA molecule called?
a. Genetic code, DNA
b. DNA, RNA
c. Codon, anticodon
d. bird, dog

Answers

Answer:

1. C

2. C

3. C

Explanation:

Hope this helps.

why do all of the planets orbit in the same direction?

Answers

Answer:

Due to retrograde orbit.

Explanation:

Retrograde orbit means that it's orbiting the opposite way of the parent body; In this case, the sun is rotating counterclockwise, and retrograde orbit reverses the direction, clockwise.

what are processes of the water cycle that return water to the atmosphere

Answers

Answer:

Evaporation and transpiration change liquid water into vapor, which ascends into the atmosphere due to rising air currents.

which is not involved with an inflammatory Response
A. Fever - increased temperature
B. Slowed blood flow
C. White blood cells move to the area of infected
D. inflammation in area

Answers

Slowed blood flow is not an inflammatory response.
Reasoning: a fever is caused by the body trying to kill off any unwanted pathogens with the heat. This is an inflammatory response to the body being infected.
White blood cells move to the infected area in an attempt to kill any pathogens. Since white blood cells are mainly meant to help kill pathogens, it is an inflammatory response to send white blood cells to kill the pathogen.
Lastly, inflammation is caused by the body trying to rid the infected area of the pathogens. Similar to the name “inflammatory”, the body will often cause inflammation in an attempt to get rid of any unwanted pathogens in the body.

This is an inflammatory reaction to an infection in the body. Option D is correct.

What is the inflammatory response?

When tissues are harmed by toxins, germs, trauma, heat, or any other cause, the inflammatory response (inflammation) ensues. A fever is induced by the body's attempt to destroy any infections with heat.

Histamine, bradykinin, and prostaglandins are among the substances released by injured cells. Because of these substances, blood vessels leak fluid into the tissues, producing swelling.

White blood cells migrate to the affected location to destroy any germs. Because white blood cells are primarily intended to aid in the killing of infections, sending white blood cells to destroy the pathogen is an inflammatory reaction.

Finally, inflammation results from the body's attempt to cleanse the contaminated region of microorganisms. Similar to the label “inflammatory,” the body will frequently create inflammation in an attempt to cleanse the body of any undesirable infections.

Therefore, option D is correct.

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WILL MARK BRAINLIEST
What is the biggest difference (other than their size) between a hot air balloon and a “regular” balloon?

Answers

Hot air balloons float because the air within the balloon is heated by a burner, making it less dense than the air around it, allowing the weight to get lifted from below. Gas balloons may be filled with either helium or hydrogen and use sand as ballast.

Explanation:

What is the grouping of organisms by their energy source

Answers

Cell-tissue-organ-organ system-organism

Which butterfly-shaped portion of the brain is responsible for spinal reflexes?

Answers

Answer:

b. Gray matter

Explanation: is correct

Which of the following can be used to assess the biological diversity of an area?.

Answers

Answer:

genetic variation within each species and number of species present

Explanation:

Greenhouse gases include carbon dioxide and methane.

Answers

Answer:

true

Explanation:

Yes! That’s true, but there is also Nitrous Oxide & Fluorinated gasses HOWEVER they are a lot less abundant. Carbon dioxide and methane are the 2 big ones.

Describe how the Earth’s surface changed over time?

Answers

Answer:

Earth's surface is constantly changing. Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth's surface much more quickly.There are basically 2 types of changes that occur to the earth's surface (i) Slow change and (ii) fast change. Fast changes occur through the actions of earthquakes, volcanoes, landslides, etc. while slow change takes time and has a process.

Explanation:

Our home planet Earth is a rocky, terrestrial planet. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. Earth is special because it is an ocean planet. Water covers 70% of Earth's surface. When it comes to changes on the Earth's surface, the main processes to take into account are plate tectonics and the rock cycle as well as the sea-floor spreading. ... These collisions causes mountains and volcanoes to form on the plate boundaries and thus changes the shape and form of the landmass

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