Which mineral(s) have a black (or greenish-black) streak? Check all that apply.

sulfur

quartz

magnetite

pyrite

Answers

Answer 1

Answer:

Magnetite and pyrite

Explanation:

Their streaks are black

Answer 2

Magnetite is a mineral with an extremely high iron content. Magnetite is black or brownish-red with a black streak.

Magnetite  - black

Pyrite -- greenish to brownish black.

What is so special about magnetite?Magnetite is a mineral with an extremely high iron content. Magnetite is black or brownish-red with a black streak. On the Mohs hardness scale, it has a hardness of about 6.Magnetite is most commonly used as an iron ore in the production of steel. Other uses include using it as a catalyst in the Haber process to produce ammonia, as a pigment in paints and ceramics, and as magnetic micro- and nanoparticles in a variety of processes and materials.Magnetite is an abundant raw material found in the Mountains and Mountains Caves, as well as the Jellyshroom Cave and Lost River.

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Related Questions

what is the specific function of the structure labeled f?

Answers

Answer:

The muscle spindle indicated by F functions as a proprioceptor that is responsive to changes in the length of the surrounding muscle.

Explanation:

The specific function of the structure labeled f is  proprioceptor that is responsive to changes in the length of the surrounding muscle.

What is the function of the muscle spindle?

The muscle spindle is activated whenever the weight of the body, tending to bend the knees, stretches the muscles. Stimuli are sent to the spinal cord and through the motor nerve and the muscles contract to counteract the action of gravity.

The Muscle spindle is a proprioceptive sensory receptor spindle composed of muscle bundle fibers. Its main function is to signal changes in the length of the muscle on which it is located. Muscle Spindles are structures responsible for mechanical myo-integrity and regulation of muscle contraction/distension.

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Which units can be used to measure length or distance? Check all that apply.

Answers

Answer:

what are the options?

Explanation:

we dont know what the units are lol

point mutations, such as silent, nonsense, and missense mutations, are caused by

Answers

Answer:

damage to DNA during replication process

In the area illustrated, what process is evident over time?

Answers

In the area illustrated in the image attached, the biological process which is evident over time is: ecological succession.

Ecology can be defined as the scientific study of the relationship existing between living organisms such as plants and animals with respect to their physical and biological environment (abiotic factor).

In Ecology, ecological succession refers to a process through which the structure of an ecological (biological) community evolves or changes over time.

Generally, there are three (3) main types of ecological succession and these include:

Primary successionSecondary successionCyclic succession

From the ecological (biological) community illustrated in the image attached, we can deduce that there is an evolution (change) in the species of plants growing over time. This ranges from weeds during the first visit to pine and oak trees during the seventh visit.

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HELP ME PLEASE ASAP

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When molten material cools very slowly deep inside Earth, what happens to the size of the crystals?

A. The crystals are smaller compared to crystals formed closer to Earth’s surface.
B. The crystals grow at the same rate as those formed closer to Earth’s surface.
C. The crystals are larger than those formed closer to Earth’s surface.
D. The crystals are smaller because they form in a hot water solution.

Answers

[tex]\huge\fbox\orange{A} \huge\fbox\red{N}\huge\fbox\blue{S}\huge\fbox\green{W}\huge\fbox\gray{E}\huge\fbox\purple{R}[/tex]

C. The crystals are larger than those formed closer to Earth’s surface.

[tex]\huge\underline\mathtt\colorbox{cyan}{EXPLANATION:}[/tex]

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. Some granites contain minerals which are up to one meter (3 ft) across!

Construct a food web red fox

Answers

Answer:

rabbit

Explanation:

herbivore

A student observes the night sky in July with a telescope. The student does not see the constellation Canis Major.

Why is Canis Major missing from the night sky in July?


Canis Major moves around Earth.

Canis Major moves around Earth.

Canis Major moves around the Sun.

Canis Major moves around the Sun.

Earth rotates on its axis, and the Moon blocks Canis Major.

Earth rotates on its axis, and the Moon blocks Canis Major.

Earth orbits the Sun, and the Sun blocks Canis Major.

Answers

Answer:

You can only see it in December through March

Explanation:

The Canis Major can only be seen during the Winter season.

Hello! I need help pls

Answers

Answer:

I believe it's c hope this helps and I'm sorry if it's wrong

Explanation:

during replication strands of DNA separate from each other when bonds are broken between..
A. phosphates
B. deoxyribose sugars
C. nitrgen bases
D. amino acids

Answers

Answer: Nitrogen bases

During replication strands of DNA separate from each other when bonds are broken between nitrogen bases. Therefore, option (C) is correct.

What is DNA replication?

The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication. All living things replicate their DNA, which is the most crucial component of biological heredity.

There are two stages to the beginning of the DNA replication process. To begin, a protein known as an initiator unwinds a portion of the DNA double helix along a very short region. After then, a protein that is known as helicase attaches itself to the DNA strands and breaks the hydrogen bonds that are present between the bases. This results in the two strands of DNA being separated.

When two single strands of DNA are cut apart, a 'Y'-shaped structure is produced that is referred to as a replication 'fork.'

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HELP WITH SCIENCE PLS!!

what change to a property of a light wave would make the light wave appear dimmer?
a. reducing the waves frequency
b. reducing the waves amplitude
c. increasing the waves amplitude
d. increasing the waves frequency

Answers

Answer:

B.

Explanation:

The brightness of light is related to intensity or the amount of light an object emits or reflects. Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.

The brightness of light is related to intensity or the amount of light an object emits or reflects.

What is brightness?

Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.

When a source appears to be reflecting or radiating light, it is said to be bright. It's critical to comprehend the terminology and technology utilized in the lighting sector.

Lumens are a unit of measurement for light output from a bulb. A light's lumen count indicates its brightness; a lower lumen count indicates a dimmer light. Weight is like bananas, To milk are gallons, Lumens enable you to purchase the desired amount of light.

Therefore, The brightness of light is related to intensity or the amount of light an object emits or reflects.

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The products from cellular respiration are the reactants in which other chemical process?
A. anaerobic respiration
B. photosynthesis C. Krebs cycle
D. fermentation

Answers

Answer:

B

Explanation: Photosynthesis

If brown hair is dominant and red hair is recessive, what are the possible genotypes for Sally is she has brown hair?

Answers

Answer:

the answer is BB, Bb

Explanation:

If brown hair is dominant you need to consider the fact that it cant be bb otherwise she would have red hair because lowercase genotypes mean recessive. this eliminates the first and third answer leaving you with the second and fourth answer and we can eliminate the second answer because it says "what are the possible genotypes" meaning we need to list all the possible answers which leaves you with the fourth option.

The discovery that syphilis led to paralysis and to delusions of grandeur supported the _____ perspective.

Answers

The discovery that syphilis led to paralysis and to delusions of grandeur

supported the somatogenic perspective.

What is Somatogenic perspective?

Somatogenic perspective is defined as personality disorder which arise as a

result in changes in the physiological or biochemical aspect of the body. The

personality trait is delusions of grandeur which is when an individual thinks

he has more power or other traits than normal.

Relationship between Syphilis and delusion of grandeur

Delusion of grandeur is common in people with Syphilis and can be

classified as being under personality disorder which is why Somatogenic is

the most appropriate choice.

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What is the best way to deal with biodiversity hotspots?

Answers

The best way to deal with biodiversity hotspots is to focus on a limited area which would save the greatest number of species.
Conclude the best way to deal with biodiversity hot spots. Some biologists argue that focusing on a limited area would save the greatest number of species. other biologists argue that concentrating funding on saving species in hot spots does not address the problems that occur elsewhere.

Most of the food and waste materials that move into and out of a cell pass through
A.receptor proteins.
c. enzymes.
b. marker proteins.
d. channel proteins.

Answers

Receptor proteins is a right answer

which two organelles in eukaryotic cells originated from prokaryotes?

Answers

Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.

why is energy from the sun stored in the chemical bonds of glucose

Answers

Answer: Explanation: The solar energy is transferred to chemical energy during photosynthesis and stored in glucose molecule. The glucose molecule is broken down into carbon dioxide and water by undergoing a series of reactions in aerobic respiration. ... The energy is stored in energy rich phosphate bond of ATP molecule.

Find the final amount of money in an account if $9, 100 is deposited at 6.5 % interest compounded

quarterly (every 3 months) and the money is left for 7 years.

Answers

Answer:

you will have a negitative amount

Explanation:

so there is 12 mounths in a year divided by 3 is 4 then times by 7 is 28.

so then 9,100 times .065 is 591.5 that is how much mony goes in the 3 months. Then you do 28 x 591.5 =16562 so you wont have any money left you will actually be in the negitatives.

Hoped that leped:P

deficiency of nitrate ions in plants

Answers

Answer:

Plants absorb nitrates in water through their roots. ... Without nitrates, the amount of chlorophyll in leaves reduces. This means leaves turn a pale green or yellow colour. This reduces the plant's ability to photosynthesise and grow properly, which reduces the farmers' crop yield .

Explanation:

PLEASE HELP!!!!!!!
How do the organs in the endocrine system work together?
A. Organs produce hormones that change a child's body into an adult.
B. Organs filter toxins from blood and urine.
C. Organs transport oxygen to different parts of the organism.
D. Organs transmit electrical signals throughout the organism's body.

Answers

Answer: The answer is A, organs produce hormones that change a child's body into an adult.

Explanation: The endocrine system is responsible for regulating a range of bodily functions through the release of hormones.

Hormones are secreted by the glands of the endocrine system, traveling through the bloodstream to various organs and tissues in the body. The hormones then tell these organs and tissues what to do or how to function.

Maggots get their energy by breaking down dead and decaying animals. What are maggots? autotrophs producers decomposers heterotrophs.

Answers

Food is the source of energy that is used by the organism for the process of metabolism. Maggots are the larva of flies and depend on dead and decaying matters.

Maggots are:

Option C. Decomposers

This type of organism can be explained as:

The organism is classified into different classes according to the nature of its feeding habits.

Autotrophs are called the primary producer and break inorganic compounds into organic for energy.

Producers are the organism that produces their food by converting solar energy into chemical energy.

Decomposers are small-sized organism that lives in soil and breaks the organic compound of dead and decayed bodies.

Heterotrophs are organism that depends on other sources and producers for energy.

Therefore, maggots are decomposers.

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Answer: C- Decomposers

Explanation:

quiz

Why is meiosis important for sexua
reproduction?

Answers

Answer:

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.

A student is conducting a breeding experiment. She knows the genotype of one parent plant and concludes that she can use a Punnett square to predict the outcome of crossing the plant with another plant. Which statement best explains why this conclusion is incorrect?

a. She needs to know the phenotypes of the previous plant generation.
b. She needs to know the phenotype of the first plant.
c. She needs to know the genotypes of the previous plant generation.
d. She needs to know the genotype of the second plant.

Answers

Answer is (A) She needs to know the genotype of the second plant.

D. She needs to know the genotype of the second plant.

What is a punnett square?

A Punnett square is a tool used to predict the outcome of a genetic cross between two individuals. To use a Punnett square, you need to know the genotypes of both of the individuals involved in the cross. In this case, the student knows the genotype of one parent plant, but does not know the genotype of the second plant.

Therefore, she cannot use a Punnett square to predict the outcome of the breeding experiment. In order to do so, she would need to know the genotype of the second plant.

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What are the advantages and disadvantages of seed and spore reproduction? Justify whether seed reproduction or spore reproduction is more beneficial for the continuation of an organism.​

Answers

hi have a great day

No Water Required

Seeds do not necessarily need water to germinate and grow, although some require water to soften the seed coat. Large seeds in dry conditions will hold water and allow the growing plant to grow deep roots without the need for rain or additional water.

Fully Developed Embryo

Inside each seed is a fully developed embryo that is ready to begin growing. Many seeds go through a dormancy period, which is a period when the seed will not germinate and begin growing. When conditions are right, the embryo germinates and begins growing. Having an embryo already grown gives a seed plant a better chance at survival as opposed to a spore.

Nourishment

Each seed contains nourishment for the embryo inside the seed. The endosperm is the tissue that surrounds the embryo inside the seed. The embryo uses nourishment provided by the endosperm as a jump start to begin growing.

The Seed Coat

The seed coat is one major advantage seeds have over spores. A spore is a single-celled organism that develops into a plant or fungus when the conditions are right. The spore has no outer protection.

Answer:

bailey is so smart good job

during the light reactions of photosynthesis protons are actively transported:

Answers

Answer:

During photosynthesis a proton gradient is maintained by the active pumping of protons across the thylakoid membrane into the lumen of the thylakoid. ... The light dependent reactions require photosynthetic pigments that are found embedded in the thylakoid membrane.

During photosynthesis a proton gradient is maintained by the active pumping of protons across the thylakoid membrane into the lumen of the thylakoid.

What is light reaction?

The initial step of the photosynthesis process is called the light reaction, and it is at this stage that solar energy is turned into chemical energy in the form of ATP and NADPH. Both the protein complexes and the molecules of the pigment contribute to the synthesis of NADPH and ATP.

The thylakoid discs are the locations of the light response that takes place. There, oxygen (O2) is produced as a byproduct of the oxidation of water (H20). After being released from water, the electrons are then transferred to ATP and NADPH. Outside of the thylakoids is where the dark reaction takes place.

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exchange of gases in the human breathing system takes place in the?​

Answers

Answer

alveoli

Explanation

During gas exchange oxygen moves from the lungs to the bloodstream. ... This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

Required Answer :-

The exchange of gases takes place in the alveoli.

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Additional information :-

Alveoli are microscopic air sacs.

They are the primary sites of exchange of gases. Gas exchange also occurs in lungs and tissues by diffusion.

Atmospheric air contains little CO2, but blood flowing in pulmonary capillaries has a higher concentration of CO2.

CO2 diffuses from higher concentration in blood across walls of alveolar capillaries to lower concentration in air in alveoli.

Blood coming into pulmonary capillaries is oxygen poor and alveolar air is oxygen rich.

Oxygen diffuses from higher concentration in alveoli across walls of alveolar capillaries to lower concentration in blood.

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Hope it's helps !!

Please help
4.___are essentially molecules of DNA.

The ____theory accounts for the method by which a molecule of DNA makes a
copy of itself.

Answers

Answer:

Nucleotide

DNA replication

Explanation:

Which energy substance is a DIRECT source of energy used by the body to perform a multitude of functions, such as muscle contraction

Answers

Explanation:

the answer is; carbohydrates ...turn to ATP..

carbohydrate, example/ fruits, some veggies, real fruit juices..

processed sugar only works for a short time, due to the fact it is absorbed quicker than proteins.

your muscle depends on carbs, along with some proteins for energy. ATP is the end result is that cells can absorb ATP for immediate energy..Any extra is stored in adipose tissue for later use.

What's a recycling plant and how are electromagnets used there?​

Answers

Answer:

A recycling plant is a factory for processing used or abandoned materials. The different types of recycling plants include those that process glass, metals, and paper back into raw materials. Other plants focus on items that require complicated recycling processes, such as concrete, electronic equipment and various plastics.

Electromagnets are used to lift and manoeuvre the crushed up ferrous materials or again to extract them from a pile of scrap. Ferrous materials are heavy and sharp but with the strength of the electromagnets they can be lifted and moved around with ease.

Hope that helped. x

1. Describe the equator and identify which letter represents it in the picture. Make sure to use a complete sentence in your response.
А
B
C
SAVE & EXIT
SUBMIT ALL ANSWERS

Answers

The answer is B because the equator is in the middle it’s halfway between North Pole and the South Pole, at 0 degrees latitude. An equator divides the planet into a Northern Hemisphere and a Southern Hemisphere.
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