What is the function of peristalsis?

Multiple choice question.

A)
to move food through the digestive system


B)
to remove excess liquid from the body


C)
to chemically digest food to release nutrients


D)
to absorb nutrients into the blood

Answer:

The immune system

Explanation:

The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins. As long as your immune system is running smoothly, you don't notice that it's there.

Answer:

•  Friction is a force that occurs when two surfaces slide past

one another.

• The force of friction opposes the motion of an object,

causing moving objects to lose energy and slow down.

• When objects move through a fluid, such as air or water, the

fluid exerts a frictional force on the moving object. The

frictional force from a fluid is called a drag force.

• Friction examples: tires skidding to a stop on a road,

sandpaper rubbing against wood, air pushing against the

nose of an airplane

• Friction drag force causes objects to slow down as they move through a

fluid, such as air or water.

• Drag force depends primarily on the following variables:

– Cross‐sectional area of an object moving through the fluid

– Speed of moving object

– Density of the fluid

– Drag coefficient (determined by experiments; related to the shape of

the object)

• Drag force is especially dependent on the speed of an object. As an

object’s speed increases, the drag force from the fluid increases

exponentially.

• For example, when you drive at high speeds, the frictional force of air on

the car increases and fuel economy decreases

Hope this helps, have a nice day/night! :D

The most likely outcome when the scientist changed the size of the container is that the pressure increased.

Option (C) is correct.

When the size of the container is reduced while keeping the temperature constant, the gas molecules experience a decrease in volume. According to Boyle's law (P₁V₁ = P₂V₂), if the volume decreases, the pressure of the gas will increase.

Diagram X represents the initial state with larger volume, and diagram Y shows the final state with reduced volume. Since the temperature remains constant, the pressure must change to counterbalance the change in volume.

As the volume decreases, the gas molecules have less space to move around, and they collide more frequently with the container walls. This increased collision rate results in a higher pressure exerted by the gas on the container walls.

Hence, the most likely outcome when the scientist changed the size of the container is that the pressure increased, which corresponds to option C.

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Answer:

Explanation:

It can possibly be because of genetics in me. For instance: I love dark chocolate, and every time I eat some, it can activate the same photic sneeze reflex as the sun.

Answer:

Most mutations are not harmful

Explanation:

but some can be. A harmful mutation can result in a genetic disorder or even cancer. Another kind of mutation is a chromosomal mutation. Chromosomes, located in the cell nucleus, are tiny threadlike structures that carry genes.  

by the way this is copyed

Answer:

B

Explanation:

Firstly, when the food is chewed then the saliva is secreted and mixed with food. Then the food is swallowed and nutrients are absorbed.

Answer:

Water and salt = salt water

Oxygen and water = sea foam

Smoke and fog = smog

Explanation:

Hope this helped, nya~ :3

Answer:

B) Cathode rays are deflected towards a positively charged rod.

Answer: The correct option is  b (Cathode rays are deflected towards a positively charged rod )

Answer:

Explanation:

Dalton's Atomic Theory explained a lot about matter, chemicals, and chemical reactions. Nevertheless, it was not entirely accurate, because contrary to what Dalton believed, atoms can, in fact, be broken apart into smaller subunits or subatomic particles. We have been talking about the electron in great detail, but there are two other particles of interest to us: protons and neutrons. We already learned that J. J. Thomson discovered a negatively charged particle, called the electron. Rutherford proposed that these electrons orbit a positive nucleus. In subsequent experiments, he found that there is a smaller positively charged particle in the nucleus, called a proton. There is also a third subatomic particle, known as a neutron.

Protons, neutrons, and electrons are fundamental particles that constitute the building blocks of atoms.

Protons and neutrons are found in the nucleus, the central core of the atom, whereas electrons are located in electron shells surrounding the nucleus. Protons carry a positive electric charge and have a mass of approximately 1 atomic mass unit (amu).

Neutrons, on the other hand, are electrically neutral, meaning they have no electric charge, but they also have a mass of about 1 amu. Electrons, which are much smaller than protons and neutrons, have a negligible mass of approximately 1/1836 amu and bear a negative electric charge that exactly balances the positive charge of protons, resulting in an overall neutral charge for the atom. The combination of these three particles determines an element's chemical properties and behavior in chemical reactions.

To know more about neutrons here

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Answer:4

Explanation:

Answer:

1. Planets; movement of planets around the sun and other stars in the galaxy is kinetic energy

2. Rubber Bands; can be classified as both potential and kinetic energy, depending on the state of the band (when stretch=potential energy; when released=kinetic energy)

3. Rivers; strictly kinetic energy. the water is constantly moving creating kinetic energy.

Explanation:

Answer:

Oxygen is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus. Oxygen is a gas at room temperature and has no colour, smell or taste. Oxygen is found naturally as a molecule.

Answer:

i think its subatomic particles

Explanation:

Answer:

the connections you can make between albinism in humans and in animals is that animals can appear in white or pink or an animal will have pink eyes, nail, skin/scales while an human will also have nails and skin, the human body can't have scales and a human can't really have pink eyes

Hope this helps :p

Explanation:

dont read unless you need some examples...

Melanin is produced by cells called melanocytes, which are found in your skin, hair and eyes. Albinism is caused by a mutation in one of these genes. Different types of albinism can occur, based mainly on which gene mutation caused the disorder.This genetic condition gets passed to offspring when both parents carry the recessive gene. When albinism is present, the animal can appear white or pink. An animal can be completely albino (pure albino) or have leucism. Pure albino animals will have pink eyes, nails, skin and/or scales.Ocular albinism type 1 is inherited in an X-linked pattern. A condition is considered X-linked if the mutated gene that causes the disorder is located on the X chromosome , one of the two sex chromosomes

Answer: c

Explanation:

Answer:

pls explain, can you show what the younger scientist did.

Explanation:

Answer:

Energy is a force conducted by machinery like PSi ( pressured air )  or naturally aspirated such as electricity or water mills

Explanation:

Power is the amount of energy transferred or converted per unit time.

example calculation for a.)

N = 39 - P

N = 39 - 19

N = 20

P = 19

Answer:

Missing Details. Most models can't incorporate all the details of complex natural phenomenaExplanation:

Answer:

C) The student and desk have to be in contact to apply the force.

Explanation:

I am pretty sure :)

Answer:

C

Explanation:

Answer:

C

Explanation:

Correct me if I'm wrong!!

Answer:

Greenhouse gas emissions from transportation primarily come from burning fossil fuel for our cars, trucks, ships, trains, and planes. Over 90 percent of the fuel used for transportation is petroleum based, which includes primarily gasoline and diesel.

Explanation: