Another students says that the earth’s magnetic poles have flipped many times in the past. How would you evaluate their statement?

Question 18 options:

This is a true statement.


This false because the magnetic field is fixed and cannot change.


This is false because a compass always points at the true North Pole.


This is false because the magnetic field has only flipped once.

Answers

Answer 1

Answer:

True

Explanation:

As a matter of geological record, the Earth's magnetic field has undergone numerous reversals of polarity. We can see this in the magnetic patterns found in volcanic rocks, especially those recovered from the ocean floors. In the last 10 million years, there have been, on average, 4 or 5 reversals per million years.


Related Questions

You are looking through a microscope at stained cells that appear to have a stiff outer edge and smaller structures inside

Answers

Ok whats the question?

Which list correctly aligns the levels of organisms from the least to the most complex?


A. cell → tissue → organ → system

B. system → tissue → organ → cell

C. organ → system → tissue → cell

D. tissue → organ → cell → system

Answers

The answer is A

Cells are the simplest unit and systems are made up of organs that are made from tissues that are made from cells.

case studies assignment grade 11

Answers

Did you mean to add a photo?

During which stage of the life cycle is a star a ball of gas and dust?

Answers

Answer:

The sixth stage in a low mass stars life, the remains of the red giant is a glowing ball of gas about the size of earth. Nuclear fusion has stopped and the gas begins to cool.

fill in the table:-
characteristics of oviparous Animals
characteristics of viviparous animals​

Answers

Answer:

animals which give birth by laying eggs are called oviparous animals. eg: birds

animals which give birth as alive young ones are called viviparous animals . eg: mammals like cat, dog , human etc.

What is a living cell ?​

Answers

Answer:

A living cell is the basic unit of structure and function in living organisms.

which of the following determines the identity of an element?
a. atomic number
b. mass number
c. atomic mass
d. overall change

Answers

A. The atomic number

The identity of any element is given out by the atomic number it carries thus every element has different atomic number. The correct answer is option A.

What does atomic number signify ?

It signifies the number of electrons and the number of protons which are present in any element as the atomic number is equal to the number of electrons and the number of protons as well.

Atomic number is a unique property that is given out to element where the basis of their characters and the properties signifies their basic characters on which the elements will align themselves for example the elements having the atomic number as the 1 at the end usually has 1 electron in their last atomic shell same for 2.

On the basis of their properties elements are divided into various groups where the 1st one is called as alkali metal and the 2nd one is called as alkaline earth metals, 17 is called as halogens and the last 18th is called as noble gases.

Learn more about periodic table at :

https://brainly.com/question/11155928

#SPJ6

5. The water in the Buffalo River flows at an average speed of 4 km/hr. If you and a friend decide to
canoe down the river a distance of 18 km, how many hours will it take?

Answers

Answer:

48km/hr

Explanation:

...............

The organisms that are usually fossilized
by replacement are what?

Answers

Answer:

when the original shell or bone dissolves away and is replaced by a different mineral; when this occurs with permineralization, it is called petrification. In compression, the most common form of fossilization of leaves and ferns, a dark imprint of the fossil remains.

Explanation:

Where does the water enter the plant in photosynthesis?

Answers

Answer:

The water needed for photosynthesis is absorbed through the roots and transported through tubes to the leaf. The roots have a type of cell called a root hair cell. These project out from the root into the soil, and have a big surface area and thin walls. This lets water pass into them easily.

Explanation:

Hope this helps

Please help fast!!!!!
Who observed one cell dividing into two, which led to another tenet of the cell theory: cells come from preexisting cells?
A: Robert Brown
B: Matthias Schleiden
C: Theodore Schwann
D: Rudolph Virchow

Answers

The answer should be D.

Answer:

The answer is C. Theodore schwann.

Explanation:

Both protein and carbohydrate molecules tend to form chains. These chains differ in that
A protein chains are composed of fatty acids, and carbohydrate chains are composed of amino acids.
В.
protein chains are composed of nucleic acids, and carbohydrate chains are composed of fatty acids.
С.
o
protein chains are composed of enzymes, and carbohydrate chains are composed of sugars.
D. O protein chains are composed of amino acids, and carbohydrate chains are composed of sugars.

Answers

The answer is D. protein chains are composed of amino acids, and carbohydrate chains are composed of sugars.

Both protein and carbohydrate molecules tend to form chains. These chains differ in that protein chains are composed of amino acids, and carbohydrate chains are composed of sugars. Thus, option D is correct.

What is protein?

Protein has been defined as the large macromolecules as well as biomolecules that are used to made up of the long chains of the amino acid. There has been various function of the protein such as the DNA replication, speeding up of chemical reaction which helps to maintain the structure of cell.

The main function of the protein has to maintain the structure and function of the organs, repair muscle, and the muscles. Diet contains high protein has been recommended for the purpose of losing weight, reducing fat, or increasing fat.

There are several types of the protein such as the structural protein, transport proteins, antibodies, contractile proteins, hormonal proteins, and enzymes.

Therefore, Both protein and carbohydrate molecules tend to form chains. These chains differ in that protein chains are composed of amino acids, and carbohydrate chains are composed of sugars. Thus, option D is correct.

Learn more about protein here:

https://brainly.com/question/17095120

#SPJ2

In 1907, Dr. Duncan MacDougall performed a series of experiments in which he attempted to measure the weight of the soul as it left a dying person. In his experiments, MacDougall placed a dying person on a scale and measured their weight immediately prior to and following death. MacDougall determined the change in weight to be approximately 21 grams. From these experiments, he concluded that the soul exists and has mass. What is the fundamental scientific flaw in his conclusions? (5 points)

They are based on the concept of the soul, which is beyond the bounds of science.
They are based on the idea that the soul is made of matter, not energy.
They are based on the assumption that the soul does not remain in the body after death.
They are based on the concept that the soul can be measured.

Answers

Answer:

I think so..

A. They are based on the concept of the soul, which is beyond the bounds of science.

Answer:

A. They are based on the concept of the soul, which is beyond the bounds of science.

Explanation:

Good luck! Hope this helped :)

Which statement accurately describes sickle cell anemia?

Answers

Answer:

Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body

Explanation:

Answer:

A group of disorders that cause red blood cells to become misshapen and break down.

Explanation:

With sickle cell disease, an inherited group of disorders, red blood cells contort into a sickle shape. The cells die early, leaving a shortage of healthy red blood cells (sickle cell anemia), and can block blood flow causing pain (sickle cell crisis).Infections, pain, and fatigue are symptoms of sickle cell disease.

What type of inheritance is observed in this pink and yellow flower?
______

Answers

People. THE ANSWER IS codominance. NOT co-dominance.

hope this helped you all.      if can, Mark BRainLesT

Answer:

right answer is codominance

Explanation:

please answer this for me (five star) no cap

Answers

Answer:

B

Explanation:

Answer:

C)

Explanation:

Chloroplast only exist in an plant cell. That was a dead giveaway .

The answer cannot be B because both animal and plants have cell membranes and from the objective it is distinctively describing a plant cell. An also an animal cell does not have a cell wall.

Which of the following carbon-based molecules stores information?
nucleic acids
lipids
carbohydrates
proteins

Answers

Answer: nucleic acids

Explanation:

Who knows anything about anesthesiology??? I'm in the 9th grade, but I think that's what I want to do when I get older.

Answers

the branch of medicine concerned with anesthesia and anesthetics

Answer:

Its the doctor thats puts patients to sleep

Explanation:

Brainliest?

Which model represents the intermediate step between glycolysis and the citric acid cycle?

Model

Answers

Answer:

Model A

Explanation:

Answer:

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A.

Explanation:

elements or compounds produced by a chemical reaction

Answers

Answer:

Are known as a reactant!

Explanation:

Which of the following statements is true for a molecule that is phosphorylated?
A) It has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate.
B) It has a decreased chemical energy and is less likely to provide energy for cellular work.
C) It has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate .
D) It has increased chemical potential energy that may be used to do cellular work.

Answers

Answer:

The correct appropriate is Option D.

Explanation:

The phosphorylation mechanism of both a chemical compound, either through inorganic phosphate conversion other than by phosphate conversion from yet another biological phosphate.  Those have improved chemical energy capacity which could be used to do cellular function.  

Some other possible alternatives are not connected to the situation described. So, the solution above is the right one.

The statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).

Phosphorylation is a posttranslational protein modification that plays a fundamental role in many cellular processes.

Phosphorylation increases the potential energy of a molecule by adding a phosphate group that contains a high-energy phosphate bond.

The energy released by this phosphate bond can be used to drive many cellular processes.

In conclusion, the statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).

Learn more in:

https://brainly.com/question/9382974

Which answer best explains the difference between protists and bacteria?

A. Bacteria are prokaryotes and protists are eukaryotes

B. Bacteria have a cell membrane while protists do not

C. Bacteria have ribosomes while protists do not

D. Bacteria have cytoplasm while protists do not.

Answers

Answer: B hope this helps

Explanation:

Which feature of Earth is part of the hydrosphere?

air
fish
glaciers
rocks

Answers

Answer:

Glacier

Explanation:

It is a form of water.

Answer:

Glaciers

Explanation:

They're found in polar areas in/near water

Rocks, temperature and water are what part of the environment?

Answers

Answer:Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.

Explanation:

Which of the following best describes how the structure of the fluid mosaic model of the cell membrane controls the movement of substances in and out of the cell? (3 points)

Answers

Answer: The fluid mosaic model describes the structure of the plasma membrane as a mosaic of components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character. Plasma membranes range from 5 to 10 nm in thickness.

Explanation:

The option that describes the fluid mosaic model of the plasma membrane is a lipid bilayer with protein molecules dispersed within it.

It should be noted that the fluid mosaic model of the plasma membrane was proposed by Singer and Nicholson to explain the structure of the plasma membrane.

The plasma membrane is known as a fluid model because it has several types of molecules that float along the lipids. The fluid mosaic model of the plasma membrane is made up of two layers of lipid molecules where there are protein molecules dispersed within.

Read related link on:

https://brainly.com/question/18639907

Which two pieces of fossil evidence support the idea of continental drift? bacteria and petrified wood Glossopteris and bacteria Lystrosaurus and Glossopteris petrified wood and Tyrannosaurus

Answers

Answer:

It's Lystrosaurus and Glossopteris

Explanation:

got it right on edge

Answer: the other person is right, it is Lystrosaurus and Glossopteris

Explanation:

which best describes the function of nuclei acids

Answers

Nucleic Acid in genetics and are also useful in protein synthesis secure up genetic knowledge in living things

Which four nutrients cycle through all of Earth's spheres and organisms? ​

Answers

Answer:

water, carbon, nitrogen, phosphorus, and sulfur cycles.

Explanation:

Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.

Hydras are animals related to coral and jellyfish. Hydras can reproduce sexually or asexually. Why would hydras avoid reproducing asexually when conditions are difficult?
1. The high genetic diversity could mean that all of the hydras die, depending on the situation.

2. The lack of genetic diversity could mean that all of the hydras die, depending on the situation.

3. Reproducing more slowly would be a good way to take advantage of plentiful resources.

4. Reproducing more rapidly would be a good way to take advantage of plentiful resources.

Answers

Answer: 3. Reproducing more slowly would be a good way to take advantage of plentiful resources.

Explanation:

Hydra reproduce by both sexual and asexual modes of reproduction. In the case of asexual reproduction the bud develops on the parent body and derives nutrition from parent body, matures and finally get detached from the parent body. During asexual reproduction many buds will develop and live as an individual organism this will reduce the availability of resources like habitat, food, and others. Thus if the organism reproduces slowly then it will take advantages of many resources without experiencing the scarcity of resources.

What does a high population density indicate?

O The area is being overfished.

O The species is likely to face extinction.

O There is no other place for that species to live.

O Food supply is high and the number of predators low.

Answers

Answer:

O Food supply is high and the number of predators low.

Explanation:

Population density is defined as the population living in per square mile/km.

High population density indicate that the people living in an area have high food supply and the number of predators low. Predators are responsible to control the population but due to high food supply and low predators, there will be no control in the population and no control in the feeding behavior of the population that leads to High population density.

Hence, the correct option is "Food supply is high and the number of predators low."

Answer:

D; Food supply is high and the number of predators low.

Explanation:

Other Questions
2.Consider the following graph and rotate point P 90 counterclockwisearound two points: the origin and (-2,4). Sketch both points on thegraph. 20 points!!!Part A: Solve mk 120 > 95 for m. Show your work. (4 points)Part B: Solve 2c 9f = 45 for f. Show your work. (6 points)(20 points) How does the polarity property make hydrogen bonds between water molecules possible? Complete each statement by choosing the correct answer from the drop-down menu. are the types of muscle tissue found in the human body.Muscle cells are specialized to are the two specialized proteins found in muscle.Muscle Tissue PLEASE HELP AS FAST AS YOU CAN ASAP DUE IN 30 MINUTES!!!!the prism is made up of unit cubes. the side length of the unit cube is 1/4 inchwhat us the volume of the prismA. 3/8B. 8C. 24D. 1/64please explain as well study the word pattern belowwhich time one letter is dropped to mark a new word do the same with word STARTLING Can anyone help me with this? 3. Use >, < or = to solve the inequality below. 4/51/2 5 = 4a -7 please help me For a continuous random variable X, P(23 X 66) = 0.25 and P(X > 66) = 0.14. Calculate the following probabilities. (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.) PLEASE HELP ILL GIVE BRAINLIEST! IGNORE WHERE IT SAYS 6 POINTS, THATS HOW MUCH ITS WORTH IN THE GRADEBOOK! which statement describes what happens insidea liquid thermometer that shows an increase intemperature?a. the volume of the liquid decreases becauseof an increase in kinetic energy.b. the movement of the particles decreasesbecause of a decrease in kinetic energy. .c. the volume of the liquid increases becausethe movement of the particles decreases.d. the movement of the particles increasesbecause of an increase in kinetic energy. Do all please for brainliesting An apparel company has introduced three different varieties of shoes at different price points. a company that produces shampoos have now introduced dishwashing liquids in the market. a shoe company sells its floaters at a price that does not even cover its production cost. a chocolate company introduces its new range of chocolates at a discounted price for limited stock only. loss leadership arrowRight promotional pricing arrowRight product line pricing arrowRight brand extension What marked the end of the Byzantine Empire?The fall of the city of Rome to OdacerThe fall of Constantinople to the Ottoman EmpireThe rise of the Russian EmpireThe death of Justinian I What is the image point of (-1, -7) after a translation left 3 units and up 2 units? Apaches and Comanches lived a nomadic lifestyle for many years. How did this affect the attempts of the Spanish missionaries to Christianize them? Carina begins to solve the equation Negative 4 minus two-thirds x equals negative 6 by adding 4 to both sides. Which statements regarding the rest of the solving process could be true? What is 80% as a fraction in reduced form? With eNotes, students can store information using a digital .