Which two minerals can be scratched by a knife but not copper coin?

Answers

Answer 1
calcite and fluorite <33

Related Questions

Need help ASAP!!!!!!!!

Answers

Answer:

i got no clue just need them points for answers sorry

WILL MARKBRAINLIST FOR BEST ANSWER ASAP PLEASEEEE
Describe the difference between primary and secondary succession.

Answers

A primary succession is where animals and other living organisms habit a land that has never been lived in by previous organisms a secondary succession is where animals have moved into land that has been used before them.

your alien friend from planet xenon is visiting and wants to learn how to breed pea plants you show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white flowers your friend is confused as to why your plants all have purple flowers how would you explain in the simplest way possible what happened

Answers

Answer:

The purple flowers were probably was dominate allel and the white flowers were recessive.

Explanation:

what process is illustrated in the figure above?

Answers

Answer:

DNA -> RNA is transcription

RNA > Protein is translation

The process illustrated in the figure above is transcription.

What is transcription?

Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.

The process of transcription starts when an enzyme called RNA polymerase (RNA pol) attaches to the template DNA strand and starts to gets catalyze the production of complementary RNA.

Large enzymes composed of a lots of  dozen subunits, and when active on DNA, they are also so much  complexed with other . In many cases, these  signal which gene is to be transcribed.

It contains all the information within the code of amino acids and some of them also help in protein synthesis too.

Therefore, the process illustrated in the figure above is transcription.

Therefore, it is transcription.

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When looking at flat-tailed horned lizards, what trait was found in most living lizards compared to dead lizards? *
A. The horn was shorter
B. The horn was longer
C. The horn had a strong poison
D. The horn had a weak poison

Answers

Answer:

d after any reptile that is poisinis when it dies the amount of poisin becoms weaker becuase its rrying to kill air but it kill nothing

Explanation:

B the horn was longer

Scientific knowledge results from the interaction of scientists who are investigating natural phenomena. Which of these BEST describes how a scientific explanation becomes widely accepted? pls help due tonight

Answers

Answer:

A scientific theory is a broad explanation that is widely accepted because it is supported by a great deal of evidence. Examples of theories in physical science include Dalton's atomic theory, Einstein's theory of gravity, and the kinetic theory of matter.

I hope this helps a little bit.

Answer: A hypothesis is tested repeatedly and the results are confirmed with evidence

and debated by the scientific community

Explanation:

Based on the pedigree, how many offspring from this cross had the recessive phenotype?

(17 Points)


one


two


three


five

Answers

It really depends on the partner of the recessive phenotype. But 2

Answer:

two

Explanation:

PAST DUE ASSIGNMENT HELLPPPPP!!

Answers

Answer:

What was the assignment? There's nothing attached, my guy

Explanation:

Answer: Okay What is the assignments?

Explanation:

Which statements best describe science? Check all that apply.

A. Science uses beliefs and opinions to construct explanations.
B. Science is resistant to new information.
C. Science is supported by facts and processes.
D. Science involves observation and experimentation.
E. Science continually changes and is constantly updated.

Answers

Answer:

Maybe B, try that Im sorry if I'm wrong

Answer:

D,C, and A

Explanation:

1.What are the products in this equation? NaCl + AgNO3 --> NaNO3 + AgC
2.How many atoms make up the reactants in this equation? 2HCl + CaCO3 --> CaCl2 + H2O + CO2
3.Is this equation balanced? 2HCl + CaCO3 --> CaCl2 + H2O + CO2, Yes or no

Answers

Answer:

Explanation:

NaCl + AgNO3 → NaNO3 + AgCl

5 atoms

no

Answer:

sodium, chloride, silver, nitrogen, oxygen

9

yes

Explanation:

What does it mean to say that science is a “systematic” process?
Pls help me answer this question, it is the assessment on Scientific Knowledge

Answers

Answer: Science is a precise interaction, which implies it follows a cautious technique that includes perception and experimentation. Through experimentation, data is gathered that upholds or disproves a researcher's theory. ... Science is upheld by realities and cycles.

Explanation:

Answer:

An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It may react negatively or even die if free oxygen is present. In contrast, an aerobic organism (aerobe) is an organism that requires an oxygenated environment. Anaerobes may be unicellular (e.g. protozoans, bacteria) or multicellular.

Explanation:

True or False:
Prokaryotes can be unicellular or multicellular.
A. True
B. False

Answers

Answer: False

Explanation: Prokaryotes can only be unicellular. Eukaryotes are both. So false.

B. False:

All prokaryotic organisms are unicellular.

And eukaryotic can be either unicellular or multicellular.

So the answer is False.

Ocean water can be desalinated through the processes of reverse osmosis or heat distillation. Why don't we do this more often? Check all correct answers.



It's expensive.


It uses a great deal of energy.


We would drain the oceans.


We don't know how

Answers

It is expensive and uses a great deal of energy.
it’s expensive, uses a lot of energy.

PLZ HELP 50 PIONTSSSSS
The Great Lakes region has both biotic and abiotic components.


Abiotic components include water, temperature, rainfall, and geological features. Biotic components include all of the animal and plant species in the area.


The ecosystem of the Great Lakes includes _______.


a

all of the biotic and abiotic components of the Great Lakes region

b

only the plant and animal species that live in the Great Lakes region

c

only the abiotic components of the Great Lakes region

d

only the animal species that live in the Great Lakes region

Answers

Answer:

i think it is "A" not sure

Explanation:

Answer:

A

Explanation:

if abiotic components include water, temperature, rainfall, and geological features. Biotic components include all of the animal and plant species in the area. the the answer would be A

Which word describes the scientific study of weather and the atmosphere?

meteorology
environmental science
geomorphology
atmospherology

Answers

Answer:

I think the answer should be meteorology

Meteorology is the word that describes the scientific study of weather and the atmosphere.

What is weather?

Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy. On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the troposphere, just below the stratosphere. Weather refers to day-to-day temperature, precipitation, and other atmospheric conditions, whereas climate is the term for the averaging of atmospheric conditions over longer periods of time. When used without qualification, "weather" is generally understood to mean the weather of Earth.

Weather is driven by air pressure, temperature, and moisture differences between one place and another. These differences can occur due to the Sun's angle at any particular spot, which varies with latitude. The strong temperature contrast between polar and tropical air gives rise to the largest scale atmospheric circulations.

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Which statement is true about DNA?

Group of answer choices

. DNA contains genes that hold specific traits for an organism.

Organisms create their own DNA sequence that is not like their parents.

DNA is an exact copy from parent to offspring.

DNA is not necessary for an organism to reproduce.

Answers

It is the first option. DNA is kind of like code. It is a specific formula made for the production of offspring. The thing to notice is that when two animals meet their DNA mixes and makes a entire new layout. Basically every DNA sample is different, much like a fingerprint or even a snowflake. In conclusion the answer is option A. Have a great day!
the answer to ur question is A

HElp i will give you brainliest

Answers

Answer: Mass

Explanation:

Answer: masses

Explanation:

What type of chart is used to help organize study and predict genetic inheritance?
(16.5 Points)

Punnett square

flow chart

graph

diagram

Answers

The answer is punnet square
punnet square is correct

What type of representation of inheritance is shown in the figure?

(16.5 Points)


Punnett square



flow chart


pedigree


graph

Answers

This isn’t chemistry but I think it’s pedigree
That is for sure a pedigree.

PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP
all I need you to do its to type out these pictures word for word it pretty simple

Answers

Plastic is a big problem in the ocean. Every year, humans produce over 300 million tons of plastic. A lot of that plastic ends up in the ocean.

Some plastic gets washed into rivers or streams.Some plastic is blown into the ocean from land.Some plastic is even thrown into the ocean on purpose.

I really hope this helps!

Every organism requires a set of instructions that specifies its traits. Which statement BEST describes the hereditary information in a cell?
pls help
A gene, but not DNA, is passed on to the next generation.

Each chromosome contains a single gene.

Genes are located on the chromosomes.

A gene, but not a chromosome, is made of DNA.

Answers

Answer:

the only option that is correct is the third

Explanation:

the second isn’t correct because they contain strands of thousands of genes. The first isn’t correct because they are both passed on. The last one isn’t correct because they are both made up of DNA

The third one is the correct answer

What is the electron atomic number

Answers

Answer:

The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons. The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom.

a. Convert the following Fahrenheit temperatures to Celsius (you may use a calculator):
98.6°F (normal body temperature)

68°F (room temperature)

20°F (a cold day)

b. Convert the following Celsius temperatures to Fahrenheit:
10°C

30°C

-40°C (that’s cold!)

Answers

37C
20C
-6.67C
50F
86F
-40F

Answer:

37C

20C

-6.67C

50F

86F

-40F

Explanation:

How do you think we could solve the problem of plastic pollution in our oceans?

Answers

Answer:

Starting from your own home is the best way to reduce plastic pollution. You can reduce it by stop using plastic bags, water bottles, anything that is plastic. You can reuse things instead. Use less energy. Turn off the lights whenever you leave the house or if you aren't using it. Lastly, conserve water. Don't let the water running if you aren't using it.

Hope this helps! :)

I recommend you search this same question, and you'll find the answer. If I were to answer your question theoretically, I would copy and paste the answer I searched, but but use some of my own words.

Benefits of making change to the environment (at least 3) **Explain what the benefits are.

Answers

Less pollution if there is less pollution the environment would be healthier and the air would be cleaner

Less littering which can help keep many animals live and kill less plants and animals

More trees which could help keep the rat clean
1 - Less pollution, if we changed the environment the massive one we would make would be towards the massive amount of pollution

2 - When we plant a tree we get many benefits one of them is we have more fresh air which will better circulate the air flow in more populated areas of major attraction

3 - A longer life span, removing all the junk from our streets and sewers can actually increase our life span. A research conducted by AQLI, they found that these populations would see their lifespan cut by five years on average, after being exposed to pollution levels 44 percent higher than 20 years ago.

(a) What human activity is responsible for the formation of smog and acid rain? (b) What kinds of harm does photochemical smog cause? (c) Do you think that photochemical smog levels are high during the winter or during the summer? Explain.

NO FILES OR I REPORT >:-((

Answers

Answer:

Explanation:

a) Air pollution

b) It can cause climate change, respiratory problems etc

c)Winter. More energy is being used in the winter to heat  homes, offices, businesses etc.

A mother and father have two daughters. The daughters have some similar and some different physical features. Which statement BEST explains why the girls’ physical appearance includes both similar and different features?

Group of answer choices

the daughters received a random set of genes from both parents

one daughter received fewer genes than the other

each daughter received a different number of genes from each parent

one daughter received all her genes from her father and the other daughter received all her genes from her mother

Answers

Answer:

C

Explanation:

each daughter received a different number of genes from each parent.

Answer:

a (top)

Explanation:

for B it shows different amount of genes

c is the same as B

d shows that they don't have similar genes

Why would carbon dating not be a useful way to date a fossil of Coelophysis?

Answers

Answer:

Carbon dating cannot be used on most fossils, not only because they are almost always too old, but also because they rarely contain the original carbon of the organism. Also, many fossils are contaminated with carbon from the environment during collection or preservation proceedures.

Explanation:

Carbon dating can not be a useful way to date a fossil of Coelophysis because carbon has a short half life.

Carbon dating and it's uses

Carbon dating, which is also called radiocarbon dating, is defined as the method used to determine the age of an object containing organic material with the use of isotope of carbon.

Carbon is used and absorbed by living organism including radioactive carbon-14. When they die, the radioactive carbon that they've accumulated continues to decay.

Because of the short length of the carbon-14 half-life, carbon dating is only accurate for items that are thousands to tens of thousands of years old. Fossil of Coelophysis are much older than this. Geologists must therefore use elements with longer half-lives.

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Different finch species have beaks of different shapes and sizes. What do these beak differences tell us?
A. Differences in beak shapes tell us that all the finches eat the same type of food.
B. Different finch beak shapes are evidence that all Galápagos finches shared a common ancestor a long time ago.
C. Different finch beak shapes are evidence that over time, finch species adapted to different food sources on the islands.
D. Different finch beak shapes are evidence that several finch species with different beak shapes came to the Galápagos Islands from the mainland.

Answers

Answer: I think it’s C

Explanation:

I went to bird school where I learned about this stuff.  I’m a little rusty, but I still do good.

Anyone know what to do for Punnett Squares?

Answers

Answer:

A. 75% B. 25%

Explanation:

heterozygous= having two different alleles of a particular gene (Ss)

     S     s

S  SS    Ss

s   sS    ss

A. SS, Ss, sS will have spikes on the tail => 3/4 = 75%

B. ss will have hammer tails => 1/4 = 25%

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