Does galena occur naturally

Answers

Answer 1

Answer:

Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. ... It is often associated with the minerals sphalerite, calcite and fluorite.

Explanation:

Hope this helps


Related Questions

True or False: The radius is the bone in the forearm that is on the same side as the pinky finger.

Answers

Answer:

false.  ulna is on pinky side, radius is on thumb side

Explanation:

Answer:

False

Explanation:

2.3 content quiz (Anatomy Plato)



bio




what’s the answer??




will give brainliest to correct answerer


Answers

Number 2 one I think its correct

a species has 12 chromosomes in a cell. if this cell underwent mitosis, how many chromosomes would be in the daughter cell?

Answers

Answer:

the cell would split in two and put 12 chromosomes in each daughter cell

Explanation:

Which statement is true of carriers? Select all that apply.

A) They have one dominant allele.
B) They express the recessive trait.
C) They are heterozygous for a recessive disorder.
D) They can pass a gene for a recessive disorder.

Answers

B. They express the recessive trait

The carriers for a disease in a pedigree analysis is a heterozygous. They contain a dominant and a recessive allele. Thus, correct options are A, C and D.

What are genes?

A gene is a segment of DNA that contains all the information for the development of organism. A carrier in genetics, is an individual who “carries” and can pass on to its offspring an allele associated with a disease and does not show symptoms of that disease. A carrier is an organism that carries two different alleles of a recessive gene and is thus heterozygous for that the recessive gene.

Dominant genetic disorders are those in which a mutation in just one copy of the gene pair is required for the disorder to develop. However, in recessive genetic disorders both alleles need to be recessive for the gene. This disease symptoms are only observed in case of homozygous condition.

Therefore, the correct options are A, C and D.

Learn more about alleles here:

https://brainly.com/question/14206531

#SPJ2

would this have a positive or negative effect on the body?​

Answers

Answer:

?

Explanation:

Why should we not sleep under peepal tree at night?
This question is partially wrong guys .There is no such danger around peepal tree see the researchs and decide yourself.
some people have written wrong information in this group kindly request you guys to correct wrong information and get new information.



Plants take in carbon dioxide (CO2) and release oxygen (O2) during day time when they undergo the process of photosynthesis and they take in O2 and release CO2 during night as a result of respiration.

There are 3 photosynthesis pathways adapted by plants for carbon fixation namely C3 pathway (Calvin cycle), C4 pathway and CAM pathway (Crassulacean Acid Metabolism). C3 and C4 are common among land plants and among these two, C3 is the most common.

CAM pathway can be seen in desert plants and epiphytes (i.e. plants that live on other plants). Unlike C3 and C4 plants, these plants keep their stomata closed during day and open it during night for fix CO2 in the form of malate and releases O2. They do it so, to prevent loss of water due to sunlight. During the day, they breakdown the malate and use the released CO2 through Kalvin cycle to produce sugars, similar to C3 plants. So, CAM plants releases oxygen during night.

Peepal tree is a hemi-epiphyte in its native habitat i.e. the seeds germinate and grow as an epiphyte on other trees and then when the host-tree dies, they establish themselves in the soil. When they live as an epiphyte, they use CAM pathway to produce carbohydrates and when they live on soil, they switch to C3 type photosynthesis. So, a Peepal tree can also release oxygen during the night depending on whether it is an epiphyte or not.

Other plants that give out oxygen at night are Areca Palm, Neem tree, Snake plant, Aloe Vera, Gerbera and Tulsi.​

Answers

Answer:

Ghost can come if anyone sleeps under peepal tree

Vhich molecules store information related to the function of a cell in the form of a coded message!

A

nucleic acids

B

lipids

C

enzymes

D

carbohydrates

Answers

Answer:   The correct answer is A. nucleic acids.

Explanation:   The genetic information is stored in the form of nucleic acids i.e. deoxyribonucleic acids (DNA) or ribonucleic acids (RNA).

Nucleic acids are large macromolecules in cells and viruses. Nucleic acids store and express genetic data. Therefore, option (A) is correct.

What are nucleic acids?

The biopolymers and macromolecules known as nucleic acids are fundamental to every known type of living being. Nucleotides, which are the monomers that make up nucleotides, are composed of a 5-carbon sugar, a phosphate group, and a nitrogenous base. They are the building blocks that make up nucleotides. Deoxyribonucleic acid and ribonucleic acid are the two primary subgroups that can be found among nucleic acids.

Nucleic acids, including deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), are responsible for carrying genetic information. This information is read in cells and used to produce RNA and proteins, which are necessary for the functioning of living things.

Learn more about nucleic acids, here:

https://brainly.com/question/11309892

#SPJ5

LAB Questions for Scientific Method Table 1 Circumference Volume Trial #1 65.4 cm Trial #2 65.3 cm Trial #3 65.5 cm Average​

Answers

Explanation:

hmmm all of u stay safe

4301154259

Pas 1234

which structures are common to both plant and animal cells?

Answers

Answer:

What are:

Nucleus

Cell Membrane

Cytoplasm

Mitochondria

Please allow me to know if my answer helped you by clicking thank you!

Miss Hawaii

What are the main superorders for the class Monocotyledonae? When I searched it said there are 4 and I assume it's just the first two Alismatidae, Arecidae? ( If you answer I'll give brainliest and hearts )

Answers

According to Sterm’s Introductory Plant Biology 15th edition, there are four subclasses in the class Monocotyledonae, including Commelinidae, Liliales, Alismatales, and Acorus.

Commelinidae

do you think there is a quantitative relationship between transpiration rate and number or size of leaves on the stem? explain your answer.

Answers

Answer:

Do you think there is a quantitative relationship between transpiration rate and number or size of leaves on the stem? Explain your answer. Yes, the more leaves a plant has, means more stomata will be available for transpiration. ... Without light to facilitate photosynthesis, most plants close their stomata at night.

Explanation:

the packaging and distribution center of the cell is the

Answers

Answer:

golgi apparatus

Explanation:

21. Three different processes are occurring in the drawing below. Name each process and describe it.

Answers

Answer:

Process A is diffusion

- diffusion is the random movement of molecules from the area where there is more of them to an area where there is a few of them without the input of energy.

Process B is facilitated diffusion

- facilitated diffusion is the transport of substances across a cell membrane from an area of higher concentration to a lower concentration with the help of Transport protein

Process C is active transport

- A ctive transport is when an input of energy is required to move materials through a cell membrane .

Which of the following best describes a benefit of one type of nonrenewable energy?

Natural gas does not produce greenhouse gases as other energy sources do.
Coal deposits are found on nearly every continent and mining coal poses few risks.
Nuclear power increases water vapor in the atmosphere.
Petroleum is relatively inexpensive compared to other forms of energy.

Answers

Answer:

d

Explanation:

Answer:

Petroleum is relatively inexpensive compared to other forms of energy.

Explanation:

Help me I need this done by the end of the class if you are a bot you will get your answer kicked so stop

Answers

Answer:

1. In the natural carbon cycle, there are two main processes which occur: photosynthesis and metabolism. During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product.

2. When fossil fuels are burned, they release carbon dioxide and other greenhouse gases, which in turn trap heat in our atmosphere, making them the primary contributors to global warming and climate change.

3. it Disrupts the nitrogen cycle by contaminating the groundwater and making it more difficult for the plants to absorb the nitrogen and causes the phosphorus cycle to accelerate, resulting in an excess of phosphorus in water and soil.

4.  The phosphorous cycle is slower than carbon cycle and nitrogen cycle because phosphorous is found mainly in very small dust particles. It moves very slowly from the deposits on land and in sediments and then it is transferred to the organism and from organism it is moved more slowly to the soil.

which tore off scientific statement is defined as a statement of fact that is generally accepted to be true and universal because it has always been observed to be true?

Answers

Answer: Law

Explanation:

the connective tissue covering around a fascicle is the

Answers

Answer:

a layer of connective tissue called the perimysium.

Explanation:

A living thing that is made of one or more cells uses energy, moves, responds to its environment, adjusts, reproduces, has a metabolism, and ingest nutrients is a (an)

Metabolism
growth
organism
respiration​

Answers

I believe the answer is an organism. I wish you luck!!

when inactive, the alpha subunit of the g-protein is bound to:

Answers

Answer:

the beta-gamma subunit to form an inactive trimeric protein.

Explanation:

When inactive, the alpha subunit of the G-protein is bound to a GDP molecule.

The guanine nucleotide-binding proteins (commonly called G proteins or GTPases) represent an evolutionarily conserved protein family that serves to switch on/off different signaling pathways within the cell.

G-proteins are composed of three different subunits: Gα, Gβ, and Gγ subunits.

When GDP is bound to , this subunit remains bound to the Gβ subunit in order to form an inactive heterotrimeric protein.

When GTP is bound to the G-protein, then Gα dissociates from the other subunits and triggers the activation of the G-protein.

In conclusion, when inactive, the alpha subunit of the G-protein is bound to a GDP molecule.

Learn more in:

https://brainly.com/question/7006250

A dichotomous key uses
inferences.
DNA sequences.
subjective descriptions.
observable characteristics.

Answers

Subjective descriptions

Answer:

Explanation:,jkh,gf nvcbnhjm,uky7gti6drhfxcgnbhyjmu,iop'9u08[y7pt6of75rijmh

autorhythmic cells can generate action potentials spontaneously because they have

Answers

Answer:

Unstable membrane potentials

Explanation:

what de-polymerizes microtubules to separate sister chromatids during anaphase?

Answers

Mitotic spindles depolymerize microtubules to separate sister chromatids during anaphase.

What are microtubules?

Microtubules are present inside the cell. They are present in bundles, and they are together with a group of 9 to 11 microtubules. They are rigid and hollow from the inside. They are part of the exoskeleton.

Regarding how chromosomes travel during anaphase A, there are two primary theories. One is that the chromosomes are pulled along the kinetochore microtubules by motor proteins at the kinetochores using the energy from ATP hydrolysis, which causes the microtubules to depolymerize.

Therefore, the microtubules are separated or depolymerized by spindle fibers, to separate the sister chromatids into lines.

To learn more about microtubules, refer to the link:

https://brainly.com/question/14396455

#SPJ2

This question is about the nervous system.
Describe the function of receptors in the skin.

Answers

Answer:

The skin possesses many sensory receptors in the epidermis, dermis, and hypodermis, which allows for discrimination of touch such as pressure differences (light vs. deep). Other qualities of the external world assessed by skin sensory receptors includes temperature, pain, and itch.

Explanation:

Answer:

What is the function of the receptors in the skin?

The skin possesses many sensory receptors in the epidermis, dermis, and hypodermis, which allows for discrimination of touch such as pressure differences (light vs. deep). Other qualities of the external world assessed by skin sensory receptors includes temperature, pain, and itch.

hope this helped

Explanation:

the area where the optic nerve leaves the retina is referred to as the

Answers

Answer:

The optic disc

Explanation:

At the optic disc, the optic nerve fibers exit the eye through fenestrations within the sclera (lamina cribrosa).

Explain how the structure of an enzyme can affect its function.

Answers

Explanation:

i hope the answer will help you !

Explain why the amount of water on Earth remains relatively constant?

Answers

Answer:

because science

Explanation:

The Sun provides the energy to power the water cycle. When water changes state in the water cycle, the total number of water particles remains the same. The changes of state include melting, sublimation, evaporation, freezing, condensation, and deposition.

POSSIBLE POINTS: 3
are made from smaller building blocks known as nucleotides. Their main function is
Two examples include

Answers

Answer:

Proteins are composed of amino Acids

Answer:

Nucleic acids are made from smaller building blocks known as nucleotides.

The main function of nucleotides: is to form polynucleotides, which are strands of genetic information that can wrap around each other to form a DNA double helix.

Explanation:


Atoms combine together in different ways to form larger particles known as What?

Answers

Answer:

when atoms combine they form a chemical bond, which is a force of attraction between two atoms. ... in many cases, atoms combine to form larger particles called molecules.

Explanation:

Answer:

please give me brainlist and follow

Explanation:

when atoms combine they form a chemical bond, which is a force of attraction between two atoms. ... in many cases, atoms combine to form larger particles called molecules.

What are 3 characteristics of a small shallow burn that indicate you should be seen by a doctor?

Answers

Answer:

The size of the burn. The cause (Thermal, Electrical, Chemical, Radiation, or Friction.) The part of the body where the burn occurred. The age and health of the burn victim

Explanation:

your welcome

how can several classification categories be used on the same object????????

Answers

Answer: Several classification categories can be used on the same object by characteristics that have been given.

Explanation:

Kingdom:

The highest category into which organisms are classified.

Phylum:

A category used in the classification that consists of one or several similar or

closely related classes.  You may also use DIVISION.

Class:

One or several similar or closely related orders.  Similar classes are grouped

into PHYLUM.

Order:

One or several similar or closely related families.  Similar orders form a

CLASS.

Family:

One or several similar or closely related genera.  Similar families are grouped

into an ORDER.  The names are usually determined from a type genus (Cactus,

Equus) that is characteristic of the whole family.

Genus (pl. genera):

A number of similar or closely related species.  The common name of an organism

is sometimes identical to the genus, e.g. Lilium = lily.  Similar genera are

grouped into a FAMILY.

Species:

A group of similar individuals that can breed and produce fertile offspring.  

Similar and related species are grouped into a GENUS.  Within certain groups,

species may not mate and will under different selection pressures develop

different characteristics form the main population.  This is called a

subspecies.

Hope this helps!!!

By characteristics, multiple classification categories can be applied to the same object.

How the classification is done ?

The specificity of the categories within a taxonomic classification increases.Domain, the point of origin for all species, is the most general category in taxonomic classification; One of these domains is shared by all species: Eukarya, bacteria, and archaeaKingdoms are the second taxonomic classification category within each of the three domains, followed by phylum, class, order, family, genus, and species categories.Because they are more closely related, organisms become more similar at each classification category.As inaccuracies in classifications are discovered and rectified, changes to the taxonomic classification of many species must be made as scientific technology advances.A hierarchical model is used in the taxonomic classification system, which is also known as the Linnaean system after its creator, Swedish botanist, zoologist, and physician Carl Linnaeus.The groups get more specific as they move away from the point of origin, until one branch becomes a single species.For instance, scientists divide organisms into three large domains following the common beginning of all life: Eukarya, bacteria, and archaea.A kingdom is a second category that exists within each domain.The following categories of increasing specificity follow kingdoms: family, genus, class, order, phylum, and species.Plants and animals are two types of living things.Plants can be further divided into flowering and non-flowering varieties or grouped according to other characteristics.Insects, reptiles, fishes, mammals, and others are subcategories of animals.

To know more about classification check this :

brainly.com/question/13048864

#SPJ2

Other Questions
Identify the functional groups present in each molecule. A 19-carbon compound is composed of one five-membered ring and three six-membered rings. Carbon 3 is double bonded to an oxygen and attached to carbon 2 and carbon 4. Carbon 17 is attached to an oxygen, which is attached to a hydrogen. i. hydroxyl group ii. carboxyl group iii. carbonyl group A central carbon is attached to an amine, two hydrogens, and a carbon that is double bonded to an oxygen and single bonded to an oxygen attached to a hydrogen. i. amino group ii. carboxyl group iii. amide group Do u think temperature and pressure have any effect on gasses Acellus: into to accounting ? What do most colonists think about the Stanp act? the nubians ruled egypt ? Simplify 11y^2+10y-9y^2-8y+5y^0 What other government official's name appears on the document? A metal strip is being installed around a rectangular workbench that is 8 feet long and 4 feet wide. If the stripping costs $4 per foot, find the total cost of the stripping. Which of the following systems of inequalities has no solution? FILIPINObasahin ang teksto sa kahon dugtungan ang paungan salit bawat talata iyong pagsasalaysay Anyone know the topic for Latin & Soul? Andy is hanging wallpaper in his kitchen. He is able to cover 2/2 fifths of the walls in the room using 6 rolls of wallpaper. What is the number of rolls of paper used per wall?The number of rolls per wall is???? "I remember the time when, tasting the mead-cup,We promised in the hall the lord of us allWho gave us these ring-treasures, that this battle-equipment,Swords and helmets, wed certainly quite him,Should need of such aid ever befall him:How we have forfeited our liegelords confidence!In the war-band he chose us for this journey spontaneously,Stirred us to glory and gave me these jewels,Since he held and esteemed us trust-worthy spearmen,Hardy helm-bearers, though this hero-achievementOur lord intended alone to accomplish,Ward of his people, for most of achievements,Doings audacious, he did among earth-folk.Our lord is in sore need of us. The day is now come when the ruler of earthmenNeedeth the vigor of valiant heroes:Let us wend us towards him, the war-prince to succor,While the heat yet rageth, horrible fire-fight." ... Through the bale-smoke he 1. A type of movement of substances across the cell membrane that requires no energy is --A. cell mediated movementB. facilitated diffusionC. active transportD. receptor protein action the rice field land preparation can be completed by 8 farmers in 25 days. if 7 more farmers join the team 5 days after starting work on the job,how many more days are needed to complete the job? What is the slope of the line passing through the points (6, 7) and (1, 5)? Your car can brake with a deceleration of 6 m/s2. The car is initially going at 40 m/s.a) How long will it take the car to come to a full stop? b) If the car is 5 meters long, about how many car lengths should be kept between you and the car in front of you (assume the car in front of you comes to a stop immediately). What is considered a pull factor for potential immigrants to Canada?Question 2 options:A) Oppressive governmentB) Excellent employment opportunitiesC) Poor education systemD) Poor health care A directional response that allows plants to grow towards light is called: What do they mean by create conflict?