when people take a mineral and hold it up, what kind of test is that?
a) luster
b) cleavage
c) hardness
can someone plss help me??​

Answers

Answer 1

Answer:

Luster

Explanation:

luster is the only answer that has to do with light. Luster is measured by the way a mineral reflects light.

Cleavage has to do with breaking minerals apart along certain fracture lines. Cleavage is not the answer.

Hardness is a test where one mineral is used to scratch another. The one that does the scratching is harder than the one that is scratched.  


Related Questions

How water resources are being polluted and how can we conserve them ?

Answers

Contaminants from farmland, factories, and cities Can runoff into our rivers. Chemicals like nitrogen and phosphorus can produce eutrophication. To help preserve the cleanliness of our water, we can reduce the use of fertilizers and other containments.

In this Landsat image of a rain forest, healthy vegetation appears red and deforested areas appear light blue. What explains the
difference in colors?
A)
Colors are assigned to different reflected sound waves.
B)
Colors are assigned to different absorbed electromagnetic energy.
Colors are assigned to different reflected bands electromagnetic waves,
D)
These are the colors of the reflected visible light on Earth's surface.

Answers

Answer:

Colors are assigned to different reflected bands electromegnetic waves.

Explanation:

How do dogs get oxygen and eliminate carbon dioxide?









How do dogs keep a proper water balance?
How do dogs eliminate wastes?
How do dogs respond to their environment?
How do dogs learn and adapts?

How do turtles get and digest food?

How do turtles get oxygen and eliminate carbon dioxide?
How do turtles keep a proper water balance?
How do turtles eliminate waste?
How do turtles respond to their environment?
How do turtles learn and adapt?


How parrots get and digest food?
How do parrots get oxygen and eliminate carbon dioxide?
How do parrots keep a proper water balance?
How do parrots eliminate waste?
How do parrots respond to their environments?
How do parrots learn and adapt?

Answers

1. The nose and throat of a dog
The most important function of the respiratory system is to deliver oxygen into the blood, which distributes it throughout the body, and to remove carbon dioxide from the blood. The exchange of oxygen and carbon dioxide occurs in the alveoli.
3. A waste digester, such as the Doggie Dooley is about the size of a bucket, which you bury in your yard. You open the lid, put the dog poop in, add an enzyme and water once a week. The waste liquefies and returns to the earth.

What's a node on a cladogram?

Answers

Answer:

The node therefore represents the end of the ancestral taxon and the stems , the species that split from the ancestor. The two taxa that split from the node are called sister taxa.

Explanation:

Answer:

A n0de corresponds to a hypothetical ancestor. A terminal node is the hypothetical last common ancestral interbreeding population of the taxon labeled at a tip of the cladogram. ... Each internal n0de is also at the base of a clade, which includes the common ancestral population (node) plus all its

Explanation:

decendants

Как в нашей стране организована автоматизированная система оповещения населения о возникновении чрезвычайной ситуации?

Answers

Долбаеб, это американский сайт, а не русский

70 points for whoever does this correctly! i would really appreciate it!

Answers

Explanation:

Soil is forned through the process of rock weathering. Weathering is the breakdown of rocks into smaller particles when in contact with water.(Flowing through rocks) Air or living organisms. Weathering can occur physically, biologically or chemically

(GIVING BRAINLIEST!!)

Which climate zone is shaded in green on the map?

A) Equator
B) Polar
C) Temperate
D) Tropical

Answers

Answer:

C) Temperate

Explanation:

It wouldn't be Equator (Obviously)

Then you have Polar which its NOT

And it couldn't be tropical

So yes!

Answer:

c

Explanation:

hope it helps :D

which part of the brain controls the reproductive system​

Answers

The answer is hypothalamus

After large scale fishing, which populations of organisms are
becoming more rare? Why?

Answers

I’m pretty sure it’s fish

Complete the following sentence.
If sweet corn is classified as a grain, and sprouted alfalfa is a pulse, then a summer squash or zucchini purchased at your grocery store would be biologically classified as a ___.

Answers

Answer:fruit

Explanation:

How does meiosis create four daughter cells from one parent cell?

Answers

Answer:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. ... The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.

Explanation:

Unlike in mitosis, the daughter cells produced during meiosis are genetically diverse. Homologous chromosomes exchange bits of DNA to create genetically unique, hybrid chromosomes destined for each daughter cell

Why do brown dwarfs never evolve?

Answers

These objects, known as brown dwarfs, have many of the elements of their more famous siblings but lack the mass needed to jumpstart nuclear fusion in their core. ... Because brown dwarfs never burn fusion at their core, scientists sometimes refer to them as "failed stars."

Answer:

I KNOW WHAT YOU DID

Explanation:

WHY DID YOU DO THIS TO MY BOY>>FRIEND

Question 15
What determines the type of soil that is created when it is formed?
A. the types of organisms living in the soil

B. the amount of time it takes to create the soil

C.the type of rock and minerals in the parent material

D.the altitude of the location of soil formation

Answers

C is the answer..........


3 Explain the concept individuality in relationships and provide TWO examples.

Answers

Answer:

Individualism is the moral stance, political philosophy, ideology and social outlook that emphasizes the moral worth of the individual. Individualists promote the exercise of one's goals and desires and so value independence and self-reliance and advocate that interests of the individual should achieve precedence over the state or a social group while opposing external interference upon one's ...

Where does the fetus normally develop?

Answers

Answer:

in the womb !!

Explanation:

hAve a good night

Answer:

Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.

Discuss the relationship between mitosis and cytokinesis. what would be the result if one happened without the other ?

Answers

If mitosis occurred without cytokinesis, the cell would contain two nuclei and twice the DNA. If cytokinesis occurred without mitosis , one of the new cells would lack DNA and a nucleus altogether. The cell cycle is regulated by signals both inside and outside of the cell.

Which sex chromosome determines the sex of a baby?
Explain your answer.​​

Answers

Answer:

Girls have two X chromosomes  and boys have chromosomes (XY).

Explanation:

Girls have two X chromosomes (XX), and boys have one X and one Y chromosome (XY). Whether a baby will be a boy or a girl is determined at the time of conception.

hi can someone help me with question 1.5 thanks​

Answers

1 and me I need the answer too

what type of mutation has the least amount of impact on a protein ?

Answers

Answer: Silent Mutation

Explanation: Silent mutation: Some mutations that change DNA bases do not have any effect on the sequence of amino acids in the protein. These mutations are called silent mutations and they do not affect the structure or function of the protein because there is no effect on the amino acid sequence.

Answer:

Point Mutations

Explanation:

It is the least harmful mutation

is a rotting log considered living or non living? why?​

Answers

Answer:

A rotting log is nonliving. However, it can have mold, lichen, or fungus growing on it, which is not the log itself. Those three things are living. And though the log was once a living tree, at it's current state, it is nonliving.

I hope this was helpful!

What is the process of shedding the uterine lining that was built up to nourish an embryo?
maturation
ovulation
menstruation
fertilization

Answers

Menstruation because that’s when we shed what was made to carry a baby. Ovulation is the bast time to get pregnant and you have a better chance then. And Fertilization is when an egg is given a sperm to soon become a baby

Answer:

Menstruation is one part of a woman's cycle when the lining of the uterus (endometrium) is shed. This occurs throughout a woman's reproductive life. With each monthly cycle, the endometrium prepares itself to nourish a fetus.

Explanation:

what is earth
please help me​

Answers

Earth is a beautiful planet that revolves around a star called Sun, which is located in one of the arms of our Milky Way Galaxy. It is the only planet known to support life in the Solar System. Humans are the most intelligent civilization on this planet. It's blue when seen from space. Recently, Earth 29 spacecraft was able to land on this planet, after 28 unsuccessful landings of Earth series of spacecrafts. We were able to learn many things about humans, most important of these was the most spoken language of them, which they call English. According to experts, humans are not yet ready to know about our existence. It can take about 1 or 2 more centuries, until they are ready to know about us.

Not all traits are determined solely by genes. Many traits have been found to exhibit phenotypic plasticity, which
occurs when individuals with the same genotype exhibit different phenotypes in different environments. Which of the
following is an exampleof phenotypic plasticity?
Well-maintained hedges can be shaped into artistic displays.
O A person who experienced malnutrition as a child is short in stature as an adult.
O Bears living in the arctic developed white fur and cold tolerance over many generations.
Certain breeds of dog have been bred for specific traits, such as poodles being bred for intelligence.

Answers

Answer:

O A person who experienced malnutrition as a child is short in stature as an adult.

Explanation:

Height is a quantitative trait, i.e., a phenotypic trait that depends on the combined action of many genes and the environment. Moreover, phenotypic plasticity can be defined as the ability of one genotype to produce different phenotypes in different environments. In consequence, quantitative traits are influenced by environmental factors and exhibit phenotypic plasticity. Quantitative traits are characterized to have a large variety of phenotypes and follow a normal distribution (a bell-shaped curve) when they are drawn.

Which student’s statement best describes the movement of Earth’s plates?

Answers

David is correct. Have a good day!

Birds have air sacs and lungs. When birds
breathe (in / out,) oxygen-rich air fills the
lungs and air sacs. When birds breathe
(in / out), the oxygen-poor air leaves the
lungs, and stored fresh air enters the lungs from
the air sacs. This means that birds always have a
supply of oxygen-(rich / poor) air.

Answers

In,, out,,, rich is the correct answer to this question

1. The pollutants in our atmosphere have the ability to change the entire planet’s

2. is a theory that states that the increasing carbon dioxide in the atmosphere is causing the climate to warm up.

Answers

Answer:

Ans1 Not only does it contain the oxygen we need to live, but it also protects us from harmful ultraviolet solar radiation. It creates the pressure without which liquid water couldn't exist on our planet's surface. And it warms our planet and keeps temperatures habitable for our living Earth

Ans.2 The carbon dioxide theory states that, as the amount of carbon dioxide increases, the atmosphere becomes opaque over a larger frequency interval; the outgoing radiation is trapped more effectively near the Earth's surface and the temperature rises.

Which layers plays the greatest role in the movement of plate tectonics?

A) outer core
B) mantle
C) crust
D) inner core

Answers

B, the mantle because it is highy heterogeneous
It is mantle Bc I’m good at science

Match the description with the corresponding fruit part.

1. the innermost protect layer around a fruit seed such as the shell of a peach pit


2. all the layers surrounding the seed of a fruit


3. the middle protective layer of a fruit seed; often the flavorful flesh


4. the outermost skin of a fruit


a. endocarp

b. pericarp

c. epicarp

d. mesocarp

Answers

Answer:edg

Explanation:

endocarp- the inner most protect

layer around fruit seed

pericarp- all the layers surrounding

mesocarp- the middle protective layer of fruit seed

epicarp- the outermost skin

If you find no insects at all in a pond or stream, what can you conclude?

Answers

There all dead then

How can you tell if an atom has a negative charge? What type of Ion is this?

Answers

ANSWER: If the atom has more electrons than protons, it is a negative ion, or ANION. If it has more protons than electrons,it is a positive ion.

If an atom has more electrons as compared to the proton then we can say that the atom has a negative charge.

What is an electric charge?

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge.

   

You can have a positive or negative electric charge (commonly carried by protons and electrons respectively).

We may say that an atom has a negative charge if there are more electrons in it than there are protons.

The positively charged atom is known as the cation while on the other hand the negatively charged atom is known as the anion.

Thus, If an atom contains more electrons than protons, we may say that it has a negative charge.

Learn more about an electric charge from here, refer to the link;

brainly.com/question/8163163

#SPJ2

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