You are tasked with identifying several rock samples. You are stumped by this sample. Your teacher has given you a hint. She tells you that it contains iron. You can now narrow your choices. But, you want to know if the rock contains hematite or magnetite.
Design a strategy to test what mineral is present.

A) Test to determine the hardness of the two samples; observe the colors.

B) Observe the shape of the crystals; observe the streak color from a streak test.

C) Observe the colors; do a streak test; see which sample is attracted to a magnet.

D) Observe the shape; determine the hardness of the two samples; observe the colors.

Answers

Answer 1

Answer:

I am prety sure C

Explanation:

Also how do you start a message with your friends?

Answer 2
C I put that and got it right

Related Questions

pls help me, ill mark!!!!

Answers

Answer:

#1. the organs of the nervous system:  This system is made up of the brain, spinal cord

#2. the organ that sensory nerves reach the brain:  Sensory neurons assemble to form sensory nerves that reach the brain through the spinal cord. The brain processes the sensory impulses and sends information to the corresponding effector organs through motor nerves

The small finger like projections are:  axon terminals, The connection between a neuron and a muscle cell is called a neuromuscular junction. The finger-like projections of the axon are the axon terminals. An action potential moves down to the axon terminals where it causes a chemical message called a neurotransmitter to be released into the synaptic cleft.

Explanation:

pls mark brainliest

Which behavior is a response to an external stimulus? EXPLAIN WHY

A. An elephant drinks water to quench its thirst.

B. A dog vomits during an illness to rid itself of pathogens.

C. A child gets a fever to fight off the flu.

D. A turtle suns itself on a rock during a cool day.

Answers

Answer:

the answer is d

Explanation:

trust me I got it right

what important detail should be modeled in the movement of the moon?

Answers

Make sure to model the phases of the moon in occurrence with movement

Dont give me a link please answer the question. I'm tired and i want to get this done so like keep the answer short and simple, please

If Pluto had not been demoted to a dwarf planet, what category of planet would it fall under? Explain your answer.

Answers

Answer:

The planet pluto originally was considered as a real planet until its demotion as a dwarf planet.

The reason it was demoted was because it was soon realized to not meet the three criteria of the International Astronomical Union used to define a full size planet.

So if pluto was not categorized as a dwarf planet than it would of just fallen under as a planet.

Explanation:

Not mine answer but it from purple6kabi

Answer:

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet.

Explanation:

answer the question plss and thank you.

Answers

Answer:

Definition: A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

use it: molecules is in yours and my body

summarize: a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Picture it:

Space hurricanes are caused by____________.

Question 2 options:

streams of plasma unleashed from the sun in what's known as the solar wind.


the warm waters of the ocean fuel space hurricanes.


electrons and protons combining together to form a massive tornado like feature in the sky.


the planet Pluto, who is still mad about being kicked out of our solar system.

Answers

It’s definitely the last one :) (just joking)
It’s the first one because it had more explanation and it’s pretty obvious :)

Space hurricanes are caused by streams of plasma unleashed from the sun in what's known as the solar wind.

What is Space hurricane?

This is a phenomenon in which charged electrons and plasma make up a storm instead of rain and wind.

The plasma is usually unleashed from the Sun which is why option A was chosen as the most appropriate choice.

Read more about Hurricane here https://brainly.com/question/18221136

PLS HELp
Flocabulary

Answers

B I think sorry if I’m wrong
I believe it is C! :)

Which of the following cellular processes will be involved in the growth, development, and reproduction of the offspring?
a. meiosis only
b. mitosis only
C. both meiosis and mitosis
d. neither meiosis nor mitosis

Answers

A - meiosis only
Explanation

Answer:Both Mitosis and meiosis

Explanation:

Cell face both conditions for the development of new offspring

Can SOmeone do this for meh... I just got back home and im tired ;L

Firmly hold with one hand the end of a ruler (or similar object) over the edge of a table. Pull the other end down gently and listen to the sound. Then give the ruler (or similar object) a harder downward pull, and see if there is a difference in sound. Describe what you hear and explain the difference using the terms “energy,” “amplitude,” “intensity,” and “decibel.”


2. Take some time to listen to sounds in your environment. Make a list of ten sounds, ranking them from the highest pitch to the lowest. Write a couple of sentences describing whether this was easy or difficult and why. (Some of the sounds can come from tapping objects that vibrate or playing musical notes on an instrument.)

Answers

Don’t click it they are hackers

Genetic recombination would be most closely associated with which process in disease-causing microorganisms?

A.binary fission in fungi
B.sexual reproduction in fungi
C.spore formation in bacteria
D.viral replication in host cells

Answers

i think the answer is B because genetic diversity in sexually reproducing organisms can allow an organism to function in new ways

Genetic recombination is most closely associated with: Choice D: Viral replication in host cells

Definition:

Genetic recombination (otherwise termed genetic reshuffling) is simply the exchange of genetic material between different organisms which leads to production of offspring with combinations of traits that differ from those found in either parent.

In retroviruses, recombination actually occurs at the point during replication when the retrovirus genome is in a DNA form and takes place by the same break-rejoin technique as in cells and DNA viruses.

Recombination can occur both between two related retroviruses and between the retrovirus DNA and the host DNA.

Read more:

https://brainly.com/question/16169390

Can octopuses grow their fangs back?

Answers

Answer:

hi

Explanation:

i think they can't.But they can regrow their arms

have a nice day

Which of the following contributes to the desertification of the land?
A. under-populated land
B. overgrazing of farm animals
C. sufficient irrigation
D. failure to cultivate the land

Answers

Respuesta:

B. pastoreo excesivo de animales de granja

Porque son lugares secos.

Explicación:  

Las políticas e infraestructuras que promueven la agricultura en las tierras de pastoreo que no pueden mantener sistemas viables de cultivo, contribuyen a la desertificación. La mayoría de las áreas de tierras secas (el 65%) son tierras de pastoreo que son más adecuadas para el pastoreo sostenible que para el cultivo.

answer: B, overgrazing of farm animals

Reflection Questions
1. Explain how biological evolution is supported by the fossil record.
2. Why is natural selection a mechanism for biological change?
3. How does chemical evolution explain the origin of life on Earth?
4. Explain why scientific theories, such as biological and chemical evolution, represent the
strongest explanation of the changes observed in the fossil record.
5. How can scientific theories on evolution and the fossil record change over time?

Answers

Answer:

1) The word ‘evolution’ was first mentioned in the book ‘The Origin of Species’ in 1859, by Charles Darwin. Darwin put forward the concept of evolution during his journey to the Galapagos Islands. 

2)Natural selection is an important mechanism of evolution. It states that the organisms that are able to survive and reproduce with the changing environmental conditions are selected by nature while the ones that cannot survive are eliminated.

3) Evolution mainly deals with the origin of life on earth. The conditions and the forms of life on earth were entirely different from what we see today.

please forgive me I cant answer 4th one..

5)Charles Darwin, an English naturalist of the 19th century made an extensive study of nature for over 20 years. 

1. The fossil record provides crucial evidence for biological evolution. Fossils are the preserved remains or traces of past organisms, providing a record of life on Earth over millions of years.

By studying fossils, scientists can observe changes in organisms and their characteristics over time. Fossils show a progression of simpler life forms in older layers to more complex ones in more recent layers.

2. Natural selection is a mechanism for biological change because it leads to the adaptation of populations to their environments over time. It is based on the concept that individuals within a population exhibit variation in traits, and those traits that enhance survival and reproduction are more likely to be passed on to future generations.

Through natural selection, individuals with advantageous traits have higher chances of surviving and reproducing, leading to the increased frequency of those traits in subsequent generations.

3. Chemical evolution, also known as abiogenesis or prebiotic evolution, explains the origin of life on Earth by proposing that life arose from non-living matter through a series of chemical reactions.

According to this theory, in Earth's early conditions, simple organic molecules formed from inorganic compounds through processes like lightning, volcanic activity, and reactions in the atmosphere and oceans.

These molecules then underwent further reactions, leading to the formation of more complex molecules like amino acids and nucleotides, which are the building blocks of proteins and nucleic acids, respectively.

4. Scientific theories such as biological and chemical evolution represent the strongest explanations for the changes observed in the fossil record because they are supported by extensive evidence from multiple scientific disciplines.

These theories have withstood rigorous testing, scrutiny, and peer review over many years. They are based on a large body of evidence, including the fossil record, comparative anatomy, genetics, molecular biology, and observations of natural populations.

5. Scientific theories on evolution and the fossil record can change over time as new evidence is discovered, technologies advance, and scientific understanding improves.

The process of scientific inquiry involves continuous investigation, testing, and refinement of theories based on new data and observations.

As scientists gather more evidence from fossil discoveries, genetic studies, experimental research, and other fields, our understanding of evolution and the fossil record can deepen and evolve.

Know more about the fossil record:

https://brainly.com/question/7671909

#SPJ4

what is the connection between chromosomes and the heavily muscled phenotype??
Uses these vocab terms or phases in the short answer response: allele, chromosomes , heavily muscled, myostatin protein

Answers

Answer: The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.

Explanation:

Melanie took two identical thermometers, one with its bulb painted black and the other with its bulb painted white. She kept a lighted lamp at equal distance from the two thermometers.

Which thermometer will show a higher temperature after an hour?

Thermometer with black bulb, because black reflects less heat than white


Thermometer with black bulb, because black absorbs less heat than white


Thermometer with white bulb, because black reflects more heat than white


Thermometer with white bulb, because black absorbs more heat than white

Answers

Answer:

A

Explanation:

Answer:

A

Explanation:

Light ray 1 strikes the smooth surface of a mirror as shown below.

**IMAGE BELOW**

Which of the following is the reflected ray for ray 1?

A) Ray 2

B) Ray 3

C) Ray 4

D) Ray 5

Answers

Answer:

The answer is D. Ray 5

Explanation:

Its because you have to angle the mirror so that it will reflect

Answer:

naw man its ray 2

Explanation:

IF YOU ANSWER ALL THESE QUESTIONS AND THERE ARE CORRECT YOU WILL GET BRAINLEAIST
1. Which part of the flower produces sperm?
2. Which part of the flower attracts pollinators, like bees?
3.What is the name of the male reproductive organ of the flower?
4.What is the function of the stamen?
5. What holds up the stamen?
6. What are the male reproductive parts of the flower?

Answers

Answer:

1. The anther produces the pollen grains that contain the sperm needed for fertilization

2.Petals attract the pollinators.

3.Stamens are the male reproductive organ

4.The main function of the stamen is to produce the pollen grains, which house male gametes , necessary for reproduction.

5.The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up.

6.A stamen consists of an anther (which produces pollen, the male reproductive cell) and a filament.

please mark as brainlsit if it helps

Answer:

1. the anther

2. showy petals and sepals, nectar guides, shape, size, and color.

3. stamen

4. The pollen-producing part of a flower, usually with a slender filament supporting the anther.

5. the anther and filament

6. anther, filament, pollen

Explanation:

Plsss help me with this its science
Make a general comparison of those planets closer to the sun with those farther from the sun,
based on the data below.

Answers

Answer:

Planets that are farther tend to have gas surfaces, a bigger diameter, and more moons. Planets closer to the sun have the opposite.

On the average, how much energy is lost from each trophic level? explain why

Answers

Answer:

I think it's 10% because some of it turns into heat energy

Explanation:

On average, about 90% of the energy is lost from each tropic level. The remaining 10% is available for the next trophic level.

The tropic level of the organisms is the position of organisms occupied in the food web. When an organism consumes other organisms as its food, the energy stored in the form of chemical energy in the organic molecules is converted into the energy used for cellular respiration.

This conversion is not efficient and the energy is lost in the form of heat. Some of the energy is used for growth and maintenance. While other energy is excreted.

Thus, when an organism consumed organic matter, 90% of the energy is lost and 10% of the energy is involved in the building of body tissues. This 10% of energy is passed to the next level.

To learn more about the Tropic level:

https://brainly.com/question/29563167

#SPJ4

Tell me something interesting about protozoa (at least 5 facts)
make it simple

Answers

Answer:

an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).

Hello there!!

I love protozoa so this should be fun.

1. Protozoans are unicellular beings that live in wet environments.

2. Protozoans have 2 prevalent ways of feeding:

a) the most common is utilized by heterotrophs like amoeba. An amoeba extends its elastic body until it completely surrounds the victim. Then the amoeba simply has to digest its food.

b) The second most common is through cilia. Paramecia use this method. The hair-like cilia in its mouth catch hold of food and push the meal into the paramecium's digestive tract.

3) The only protozoan to have its own family is Euglena.

4) Euglena has its own family because it has chloroplasts (meaning it can undergo photosynthesis) but it can also feed like a heterotroph. Because Euglena exhibits both plant and protozoan qualities, it has its own category.

5) Rotifers move by two spinning wheels of cilia. This type of propulsion makes the rotifer a speedy little protozoan.

I hope this answers your question. :)

Can you defang a octopus?

Answers

Yes you can ..........

Large scale change is needed to combat climate change, but according the the author, cooperative work is best done in groups of what size?



155-300


501 and up


150 or less


301-500

Answers

You need to give us the text, how would we know what to answer if we don’t know what text were reading. All I can help you with so far is to reread the text and see what the author says
We need more context to answer this

gene that is typically observed

Answers

Answer:

it think it is the marker gene it said that online for me I dont know

if that even is a gene

Answer:

yes

Explanation:

What is the genotype of a pea plant that's h0m0zygous for height?

Answers

Answer:

Hopefully this is something that might help!

depends on what letter you’re using but it would be one big one small, for example: Hh

Now I know that structures in a simple nervous system differ from those in a complex nervous system in that they have a
pls answer this seriously.
thx!!

Answers

Answer:

Now I know that structures in a simple nervous system differ from those in a complex nervous system in that they have a unit that isn't basic, but in their arrangement. In higher nervous systems there are not interneurons concentrated in the main nervous system. (brain, spinal, and cord.) They meditate the impulses between afferent and efferent neurons.

Explanation:

If you are looking at the general pattern of temperature and precipitation for an area over time, you are looking at the ______?______

Answers

Answer:

Earth's Surface rise and climate. You are basically looking at the weather and the condition of the atmosphere.

Explanation:

When the average temperature at the Earth's surface rise, evaporation occurs more which causes precipitation to also occur more.

Answer:blue

Explanations :

Which of the following is the smallest level of organization in living things?
A. organ system
B. cell
C. tissue
D. organ

Answers

Answer:

B. Cell

Explanation:

Order from smallest to most complex:

Cell - Tissue - Organ - Organ system.

Cells are the smallest. Multiple cells working together forms a tissue. Multiple tissues working together forms and organ. Multiple organs form an organ system.

Cell

Cells make tissue, tissues makes  organs, organs make a system.

help please i have to do it now!!!!

Answers

Answer:

Explanation:

1,3,4 hope this helps<3

1,3,4 brother hope it helps

Individuals with the recessive trait of night blindness (genotype nn) have difficulty seeing in low light. The pedigree shows the inheritance of night blindness in a certain family.Which of these are possible genotypes of the parental generation? Refer to the figure below and match the angle with the correct measurement in degrees.

Answers

Answer:

Cool

Explanation:

The possible genotypes of the parental generation are as follows :

Male : Night Blindness Female : Normal

What is Genotype ?

Genotype is the collection of the the two alleles that makes up the gene inherited by an offspring from its parents.

Given that only one of the males of the first generation suffers from Night blindness, He inherited the Night blindness from the parental generation. therefore the male from the parental generation is a carrier of the Night blindness allele while the Female is not a carrier.

Hence we can conclude that The possible genotypes of the parental generation are Male : Night Blindness and Female : Normal.

Learn more about Night Blindness :  https://brainly.com/question/2716290

if you were to view a bacteria cell, a protist cell and a fungi cell under the microscope, which one(s) would contain a nucleus?

-the bacteria only

-the fungi only

-both the fungi & protist

Answers

i think fungi and bacterial cell both have nucleus which can be seen under microscope
Other Questions
How do toothed whales produce echolocating sounds? Need help on this question asap please 10 points!!!! HELP!!!! BRAINLIEST TO CORRECT ANSWER!!Which of these best matches the waves with their applications?Select one:a. X-rays2 and ultraviolet rays3b. X-rays3 and ultraviolet rays2c. X-rays1 and ultraviolet rays2d. X-rays2 and ultraviolet rays1 A. 3 B. 10C. 20D. 30 The elemental composition of propane gas (C3H8) is 81.68% C and 18.32% H by mass. What is the maximum amount of C3H8 in grams that can be formed from 160.0 g C and 160.0 g H 10x+9y=-1710x-2y=16 When was the Indus Valley Civilization developed?What were the main development activities of this period. Help please!! Ill name you brainliest!! Which of the following is a way that nitrogen atoms move from a nonliving part of the environment into a living part of the environment? Which quadrilateral has four right angles and four sides of equal length? Given P(A) = 0.4, P(B) = 0.58 and P(A|B) = 0.5, find the value ofP(A and B), rounding to the nearest thousandth, if necessary. Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley. Duke Ellington which two details from the text best supports the answer to part a Help on this please asap Find the value of a and b when x = 105x222x(x - 5)10x Please Help Neil is going to a bookstore 45 miles away. The bridge was closed on the way back, sohe had to take an alternate route and had to drive 15 mph slower, which make the tripback take 7 minutes longer. How fast was he going on the way to the bookstore?? Yezenia is filling up her outdoor swimming pool to get ready for summer time. She leaves the garden hose running for 1000 minutes in order to fill the pool, which has a volume of 15,460 gallons. What is the approximate rate at which water leaves the garden hose? Cual es la diferencia entre Aprendizaje Pricipiante y Aprendizaje Experto Simplify 4(8x).A. 8xB. 4xC. 32xD. 8 + 4x Yo____ las instrucciones A. SigoB. Siguo