Any mineral with a Mohs hardness of 7 or greater could scratch quartz. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10).
hey um hopes this helps please try to answer my newest question please
Answer:
7 Hardness of a quartz mineral
Explanation:
Answer:
Orthoclase feldspar mineral is 6 percent hardness
Quartz mineral is 7 hardness
Topaz mineral is 8 hardness
Corundum mineral is 9 percent hardness
So you are asking for the hardness if it can scratch a quartz mineral. The answer is that Quartz mineral is 7 percent hardness if it can be scratch.
Key words:
1: Mineral
2: Hardness
Hope this helps.
What is a ozone and why is it so important to life on earth?
How did the formation of the ozone layer contribute to existence of life on earth
Answer:
It blocks the sun's harmful UV rays
Explanation:
Which of the following is not a role of DNA?
A. Transmitting Information
B. Storing Information
C. Copying Information
D. Creating information
Creating information is not a role of DNA.
What are the functions of DNA?DNA or the deoxyribonucleic acid is the genetic material present within the humans and almost all the species living. DNA does the function of storing information as genetic information within an organism is stored within the molecules of DNA.
At the time of cell division, all of the information within a cell needs to be copied perfectly. Therefore, DNA is the molecule, which can be replicated to produce almost the perfect copies of itself. The transmission of genetic information to the next generation is done with the help of DNA in the form of a sequence of nucleotides.
DNA performs all the above mentioned functions, however, it does not play any role in creating information.
Thus, the correct answer is option D, that is, creating information.
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Based on the diagram above, which organism will have the greatest physical difference from its ancestor?
a) birds (b) lobsters (c) perch (d) mammals
Answer:lobsters
Explanation:Because they are farther removed
The image shows a chemical's formula.
Which statement describes the molecule?
HHHHHH
H-C-C-C-C-C-C-H
HHHHHH
It is organic and a hydrocarbon.
It is inorganic and a hydrocarbon.
It is organic only.
It is inorganic only.
The image is not clear. The correct image is attached below.
Answer:
It is organic and a hydrocarbon.
Explanation:
The given chemical formula represents a compound called hexane.
Hexane is a volatile organic compound. It is an unbranched alkane and hydrocarbon constitute of six carbon atoms and 14 hydrogen atom having molecular formula C6H14.
It functions as a neurotoxin and non-polar solvent.
Hence, the correct option is A. It is organic and a hydrocarbon.
Answer:
A
Explanation:
Which choice best summarizes the outcome of redis experiment
Answer:
Redi disproved spontaneous generation.
Explanation:
Which of the following describes surface tension in water?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Surface tension occurs due to ionic bonding.
(Choice B)
B
Surface tension is caused by water molecules repelling one another.
(Choice C)
C
Surface tension allows water to support small objects if they are placed carefully on its surface.
(Choice D)
D
Surface tension of water is weakened by hydrogen bonding.
Answer:
C
Explanation:
Thisis the tendancy of the water surface to act as athin elastic stretched skin and can therefore support small objects when carefully placed on the surface
Surface tension allowing water to support small objects if they are placed carefully on its surface best describes it.
What is Surface tension?This is the property of liquid surfaces which makes a substance which has a higher density than water to float on the surface as a result of it being able to resist the external force.
Allowing water to support small objects if they are placed carefully on its surface without sinking is referred to as Surface tension.
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Which body system is correctly paired with its
function?
A) excretory-produces antibodies to fight
disease-causing organisms
B) digestive-produces hormones for storage and
insulation
C) circulatory-transports materials for energy
release in body cells
D) respiratory-collects waste material for digestion
Answer:
C) circulatory-transports materials for energyExplanation:
Excretory system - the elimination of wastes produced by homeostasis.
Digestive system - the conversion food into energy and basic nutrients to feed the entire body.
Circulatory system - carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Respiratory system - allows your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood.
Migration is
a. the movement of organisms from a native location to a foreign location
b. the movement of organisms from a foreign location to a native location
c. the movement of organisms from their water supply to their food supply
d. the seasonal movement of organisms between locations
Answer: d. the seasonal movement of organisms between locations.
Explanation: Migration always refers to seasonal changes
Lionel is planning to run a marathon tomorrow. What type of carbohydrates should he eat for dinner the night before the race? Explain your answer and give some examples.
Answer:
He needs to take Carbohydrate load for storage of glycogen in the muscles so that enough reserves will be available when the amount present is used up during the long race.
CHO in controlled amount should be taken. 4g of CHO per body weight. Rice, oatmeal,pancakes,bread with yogurt should be taken.They are very easy to digest.The goal is to load the body with enough CHO to be converted to glycogen the following day.
Explanation:
Answer:
The night before the race, Lionel should eat complex carbohydrates because they are a source of long-lasting energy. This includes foods that contain starch, like cereal, bread, pasta, rice, potatoes, or corn.
Explanation:
It's the sample response
Oceanic crust is thicker than continental crust. True or false?
Answer:
True
The solid upper mantle tends also to be thicker under continental crust.
.
A science student makes the following statement.
Based on the data, we determined that plant growth is
affected by the type of soil.
What is the student doing?
A. Making a prediction
B. Forming a hypothesis
C. Collecting data
D. Drawing a conclusion
Which biome has the least precipitation?
A. rain forest
B. grassland
C. tundra
D. taiga
Answer: Option C.
Tundra
Explanation:
Tundra is a biome that has low Precipitation. Precipitation is a form of water that fall from the atmosphere to the Earth surface. Which could be inform of snow, sleet e.t.c.
Tundra is the coldest of all types of biomes. It has low temperature, little precipitation,low nutrients. It is located near the north Pole of the Earth. It is characterized by permafrost, permanent frozen layer on its surface.
what do u mean by this chromosones contain information of inheritance of character from parent to next genration in the form of dna
Answer:
Explanation:
DNA are the building blocks of chromosome. Think about a blueprint. Blueprint contain instructions of how to build something, the actual instructions are the drawing and those drawings are housed on the blue paper.
So if you connect that analogy to this, DNA is actually the code that tells your cell how to do, what to do and such, they are actual genetic codes with bases such as Adenine, Guanine, Cytosine, and Thymine arranged in a double helix pattern. The chromosomes are the structures that are a result of arrangement of billions and billions DNA bases, thus they are the structures that house DNA and gene (part of DNA that codes for stuff)
Temperate deciduous trees lose their leaves in Fall. Explain why trees in temperate rainforest and tropical rainforest don’t lose their leaves. PLS HELP ME!!!!!
Answer:
rees that are not evergreen, such as oaks. They adapt to cold winter temperatures by dropping their leaves in the fall and re-growing them in the spring. In tropical climates, deciduous plants drop their leaves in the dry season or in response to drought.
Explanation:
N many ecosystems, smallerpoisonous animals develop a bright coloration. Predators learn to steer clear of these colors, lest they get a mouthful of venom. Over time, other non-poisonous species may develop the same coloration, cashing in on the nasty reputation of the poisonous species. This adaptation is known by which name?
Answer:
Bayesian mimicry
Explanation:
Batesian mimicry is a form of mimicry where a harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both. It is named after the English naturalist Henry Walter Bates, after his work on butterflies in the rainforests of Brazil.
Answer:
Mimicry
Explanation:
Mimicry can described or explained as the process whereby one organism copy the action of others and do exactly the same as that copied organism.
This is usually done when the action copied from the organism is useful in escaping from predators or being seen by other organisms as a predator and allow it to have access to the available resources.
In this case, when other organism copy the bright coloration of that small poisonous organism to drive away other organism, it is called mimicry.
All of the babies were in the same nursery and p.Vulgaris infections did not occur in any other unit in the hospital. P. Vulgaris was not found in the tap water. Now what will you look for
Answer:
You would look for the virus in other places
Explanation:
I really need help with this one
Answer:
The prey population, the rabbits, and the predator population, the foxes, directly rely on one another. As the rabbit population grows, more food becomes available for the fox population to grow, therefore the fox population grows. The rabbit population now has more predators, but an assumed constant amount of food, causing the rabbit population to fall. The rabbit population falls and less food becomes available for the fox population, so the fox population falls. Both the predator and prey species are majorly responsible for the carrying capacities of the other species.
A species was added into a particular ecosystem to control the population of a prey species. This method of introducing a new species is called (biological augmentation) , (bioremedation) , or (reforestation). The population of the added species increased, leading to an imbalance in the ecosystem. This increase happened because (the competition for resources increased in the ecosystem) , (the population of prey species increased in the ecosystem) , or (the amount of resources increased in the ecosystem).
Answer:
A species was added into a particular ecosystem to control the population of a prey species. This method of introducing a new species is called bioremediation. The population of the added species increased, leading to an imbalance in the ecosystem. This increase happened because the competition for resources increased in the ecosystem.
Explanation:
The method of introducing a new species into an ecosystem to control the population of a prey species is called "biological augmentation" but in the given scenario, the population of the added species increased, leading to an imbalance in the ecosystem.
Biological augmentation is a method of introducing a new species into an ecosystem to control the population of a particular species that is causing problems. For example, if a particular species is overpopulating and causing damage to an ecosystem, introducing a predator or parasite that preys on that species can help control its population.
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How long can a human live without sleep, I’m asking for a friend...
Answer:
The longest recorded time without sleep is approximately 264 hours, or just over 11 consecutive days. Sleep deprivation can kill you. After only three or four nights without sleep, you can start to hallucinate.
Explanation:
The brown skin trait is dominant over the black skin trait in cows. If two heterozygous brown skin cows are crossed, what is the brown-skinned offspring?
B = Brown Skin
b = black skin
B b
B BB Bb
b Bb bb
Hope this helped :D
The chances of a homozygous brown skin cow is 25%
The chances of a heterozygous brown skin cow is 50%
The chances of a homozygous black skin cow is 25%
The chances of a heterozygous black skin cow is 0%
Which conclusion does the information in the diagram above best support?
a) Spiders have vertebrae. (c) Lobsters and lizards are closely related.
b) Mammals see UV light. (d) Lungfish and mammals share a common
Answer:
Spiders have a vertebrae is the correct answer.
Hope this helps :)
Answer:
The answer is A. Spiders have a vertebrae hopefully this helps!
In photosynthesis water molecules are split into ____ and _____ atoms
1. Hydrogen and oxygen
2. Sulfur and ithium
3. Carbon and nitrogen
4. glucose and fructose
Answer:
1. Hydrogen and oxygen
Explanation:
These help the plant survive.
In photosynthesis water molecules are split into Hydrogen and oxygen atoms.
Photolysis of water:
It is the process during the photosynthesis by which water molecules are split into hydrogen ions and Oxygen. In the process 2 electrons are also released.
[tex]\bold {H_2O \rightarrow 2H^+ + O + 4e^- }[/tex]
Therefore, In photosynthesis water molecules are split into Hydrogen and oxygen atoms.
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what is the process of making larger molecules by removing water called
Answer:
it's called osmosis.............
Answer: The monomers combine with each other using covalent bonds to form larger molecules known as POLYMERS. In doing so, monomers release water molecules as byproducts. This type of reaction is known as dehydration synthesis, which means “to put together while losing water
Explanation:
Which event in Earth’s history most directly allowed life to exist on land? Earth’s temperatures increased, causing widespread evaporation. Earth collided with a large object, forming the moon. Single-celled organisms released oxygen into the air when they photosynthesized. Single-celled organisms absorbed harmful gases from the air when they first formed.
Answer:
c: Single-celled organisms released oxygen into the air when they photosynthesized.
Explanation:
got it right on edge. also if there were no oxygen animals and humans could not live
The event in Earth’s history that most directly allowed life to exist on land is "Single-celled organisms released oxygen into the air when they photosynthesized." Thus, the correct option is C.
What are Single-celled organisms?Single-celled organisms may be defined as those organisms that are constructed by only one cell. This single cell carries out all of the functions needed for the organism. They lack compartmentalization.
Single-celled organisms mainly bacteria evolve themselves in such a way that they released oxygen into the air when they photosynthesized. Such bacteria are known as photosynthetic bacteria.
These bacteria are only the source that brings this diversity among living entities on the earth's surface by making the availability of oxygen on this planet.
Therefore, the correct option for this question is C.
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Some orders of land and marine mammals are closely related. Molecular data recently collected from dolphins, camels, deep and hippos have shown that hippos are the closest living relatives of dolphins. Which cladogram models this evolutionary relationship? *
Answer:
Roots
Explanation:
It should be understood that the classroom models show the evolutionary relationship between two or more organism. And they make use of the roots, class and the nodes.
In this case of dolphins and hippo, the answer should be roots. This is because organisms are vertebrates.
It should be noted that vertebrates are animals with backbones.
What could the hardness of a mineral be if it can be scratched by a cent coin?
What situation is an example of equilibrium
Answer:
Answer is the amount of water in a cup doesn't change.
Explanation:
"Equilibrium is achieved when the state of a reversible reaction of opposing forces cancel each other out. While in a state of equilibrium, the competing influences are balanced out. Imagine a cup with a hole in it being filled with water from a tap. The level of water in this cup would stay the same if the rate at which the water that flows inside is the same as the water that flows outside and thus, option C will be the correct answer."
"Equilibrium is defined as a state of balance or a stable situation where opposing forces cancel each other out and where no changes are occurring. An example of equilibrium is in economics when supply and demand are equal. An example of equilibrium is when you are calm and steady."
Describe the difference between heredity and genetics.
Answer:
The most crucial difference between the two terms is that a hereditary disease can be passed on from one generation to another. A genetic disease, on the other hand, may or may not be hereditary, but it is always a result of a change in an organism's genome. Let's go back to non-genetic traits.
hope that helps love!
Consider the brains of species A and species B to scale. A large brain. A small brain. Species A Species B Suppose that species A and species B have the same body size. Knowing this information, what can be determined from the pictures? Species B is more intelligent and has a better memory than species A. Species B can process sensory information more quickly than species A. Species A is able to rationalize thoughts more effectively than species B. Species A's brain is smaller for its body size than the brain of species B.
Answer:
C) Species A is able to rationalize thoughts more effectively than species B.
Explanation:
Just did it, Have a good day!
Species A is able to rationalize thoughts more effectively than species B, hence option C is correct.
What is the structure of the brain?
The brains of species A and species B to scale. A large brain. A small brain. Species A Species B Suppose that species A and species B have the same body size.
Total brain volume and intellect in healthy volunteers have a weak link, with a correlation value between 0.3 and 0.4 out of 1.0. In other words, between 9 and 16 percent of the overall variation in general intelligence can be attributed to brain size.
Animal brain size often remains in proportion to its bodily size. In the animal realm, larger brains are typically associated with better So, for instance, an African elephant has better capacities than a shrew.
Therefore, option C is correct.
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The given question is incomplete, so the most probable complete question is,
Consider the brains of species A and species B to scale.
Suppose that species A and species B have the same body size. Knowing this information, what can be determined from the pictures?
Species B is more intelligent and has a better memory than species A.
Species B can process sensory information more quickly than species A.
Species A is able to rationalize thoughts more effectively than species B.
Species A's brain is bigger for its body size than the brain of species B.
Species A is able to rationalize thoughts more effectively than species B.
