What is coal composed of?

Answers

Answer 1

Answer:

Coal is a sedimentary deposit composed predominantly of carbon that is readily combustible. Coal is black or brownish-black, and has a composition that (including inherent moisture) consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material.

Explanation:


Related Questions

what male reproductive organs are responsible for sperm production?

Answers

Answer:

The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm. Within the testes are coiled masses of tubes called seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis

Explanation:

its copied but hope it helps

identify 2 special facts about the spongy parenchyma cell​

Answers

Answer:

1- Parenchyma makes up the chloroplast-laden mesophyll (internal layers) of leaves and the cortex (outer layers) and pith (innermost layers) of stems and roots; it also forms the soft tissues of fruits.

2- The parenchyma remains a living cell at maturity. It is also the most common cell type, performing diverse functions, e.g. photosynthesis, storage, and secretion.

Explanation:

Create a Punnett square showing a cross between the two F1 parent plants. Their offspring are the F2 generation.

Answers

Here is the answer to the question

3. ADP + Pi → ATP is best classified as which type of reaction?

Answers

Answer:

Hi Motomasa, you are correct that there is a bit of a misrepresentation, or at least a glossing-over, in the standard description of the function of ATP. The "energy-storing" capacity of ATP is NOT in the forming and breaking of the covalent phosphate to phosphate bonds. ATP -> ADP releases energy by two mechanisms. First because the process of hydrolysing the y-phosphate (the terminal phosphate) releases energy. And second because ATP and ADP are maintained out of equilibrium in cells. The action of utilizing an ATP brings the system closer to equilibrium, which releases energy.

There is a required energy input to break the phosphate to phosphate bond. This is the activation energy. However, the energy released upon hydrolysis and moving the system towards equilibrium are of greater magnitude than the activation energy input. I hope this helps!

What is unique about active sites?

A: active sites provide cells with energy.
B: active sites are specific to certain substrates (reactants).
C: active sites store the genetic information of cells.

Answers

The Unique feature of Active sites is that active sites are specific to certain substrates (reactants)

Active sites are specific regions of an enzyme where substrate molecules bind in other to bring about a chemical reaction.

The active site is made up of amino acid which forms temporary bonds with the substrate otherwise known as the binding site and the residues which brings about a reaction of that substrate.

Active sites are specific to certain substrates (reactants). Therefore, option (B) is correct.

Active sites are vital to enzymes, proteins that aid biological processes. They have a distinctive form that matches their substrate molecules. This specificity allows only particular substrates to bind to and interact with the active site, catalysing processes. This is called the "lock and key" or "induced fit" model.

Enzymes' catalytic action depends on active sites. A substrate attaches to an enzyme's active site and changes conformation, lowering the reaction's activation energy. This speeds up the reaction. After the reaction, the products are released and the enzyme's active site can bind to another substrate. Therefore, option (B) is correct.

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Which location will cost the most for mining and reclamation at the end of the mining period?

Location 1

Location 2

Location 3

Location 4

Answers

The cost of mining and reclamation for location 4 will cost the most at the end of the mining period.

Location 4 will cost the most for mining and reclamation at the end of the mining period because the cost of mining and reclamation of the location 4 is $7,000 per 65 daysWhile on the other hand, the cost of mining and reclamation of location 1 is $5,000 per 30 days, location 2 is $4,500 per 45 days and location 3 is $3,500 per 120 days.So from this information we can conclude that the cost of mining and reclamation for location 4 will cost the most at the end of the mining period.

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Options are given below:

1. $100,000$10,000$5,000 per day30 days

2. $35,000$6,000$4,500 per day45 days

3. $30,000$7,500$3,500 per day120 days

4. $40,500$8,000$7,000 per day65 days

How do I describe chloroplast

Answers

Answer:

a plastid that contains chlorophyll and in which photosynthesis takes place.

or

a type of plastid that is involved in the synthesis and storage of foodstuffs

Explanation:

hope this helps :)

Answer:

Chloroplasts are/have

- Oval shaped

- filled with chlorophyll

- have a 2 membrane structure

Chloroplasts are special and unique structures found in plant cells that are king when it comes to turning sunlight into energy for the plant to use. (this process is called chlorophyl)

Hope this helped!

The purpose of degrading cyclins is to stop the cell cycle from happening.

A. true
B. false

Answers

a.
positive cues, like growth factors, typically increase activity of Cdks and cyclins, while negative ones, like DNA damage, typically decrease or block activity.

1 thor 10 HOW DOSE MY DOG LOOK

Answers

Answer:

9

Explanation:

minus 1 point because its only the face.

Transport in plants take place through a system of tube called

Answers

Answer:

Therefore this food is transported to other parts of the plant through a kind of tubes called phloem.

Explanation:

#7#9#10
PLEASEEE
Needed by tonight

Answers

Answer:

Explanation:75

Which regions have been most affected by rising temperatures?

Answers

Answer:

Japan

The Philippines

Germany

Madagascar

India

Sri Lanka

Kenya

Rwanda

Explanation:

1. in a biogeochemical cycle, a chemical element spends time in different places, called .

Answers

reservoirs is the answer

What types of organisms photosynthesize?

Answers

Producers make their food . for ex: plants trees ,shrub, bushes . Whereas a consumer obtain food from other organisms.

how does carbon move through the system when in the dark?

Answers

If referring to photosynthesis, carbon dioxide is brought into the cholorplast of the plant cell, it is then fixed to RUBP, it will go through a series of Redox reactions and become G3P. RUBP is then recycled and is used to fix more carbon dioxide. You need two G3P molecules to become glucose.

How do Demetri's results show that digestive enzymes are crucial to maintaining homeostasis inside the body?

Answers

In addition to breaking down food so that the nutrients may be absorbed, enzymes also generate vitamins like biotin and vitamin K and protect the body from dangerous microorganisms.

What is homeostasis?

A biological system's ability to self-regulate and maintain stability while responding to shifting environmental factors is known as homeostasis.

The body needs a steady supply of nutrients from food that has been digested. They are crucial for maintaining health and carrying out bodily tasks. The body may absorb and use food that has been broken down by the digestive system.

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how can carbon dioxide limit the rate of photosynthesis

Answers

Answer:

An increased level of carbon dioxide leads to a higher rate of photosynthesis when compared to the lower carbon dioxide level. This shows that the carbon dioxide level has an effect and is now limiting the rate of photosynthesis.

Explanation:

What do you call a substance with a pH of 6?

Answers

Answer:

i copied this i just hope it helps if not i dont know

Explanation:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. ... Water with a pH of five is ten times more acidic than water having a pH of six. As this diagram shows, pH ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline

Describe, step by step, the journey that
carbon dioxide takes from the alveolus
out of the body.

Answers

This is the answer for your question that you asked

Please help, will give the person who answers all these questions 20 points and will mark brainiest

Answers

Answer:

Yes

Explanation:

Write your question first bro.

which words help determine the meaning of the word vividly in paragraph 1

Answers

context clues,

the meaning is a strong image

what are the primary consumers in the Arctic food web?

Answers

Answer:

Humans (notice how many arrows go towards the humans, and how there are no predators of humans).

Explanation:

Humans, polar bears, and killer whales

examples of artificial permeable membranes​

Answers

Answer:

kidney tissue

Explanation:

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.

why does exposure to high temperatures cause an enzyme to lose its biological properties?

Answers

Answer:

Shape of active site changes that's why

Enzymes are affected by temperature. So, as temperature increases, enzymes activities also increases, till optimum temperature is reached. If it goes above the optimum temp, the enzymes becomes denatured or can't function anymore due to change in its active site.

NEED HELP ASAP PLEASE Describe the controversy surrounding dissociative identity disorder as a diagnosis and explain how stress
may play a role in a misdiagnosis.

Answers

The controversy surrounding dissociative identity disorder as a diagnosis is that accounts of dissociation based on current diagnostic scales are invalid because the design of the scales increases the possibility of false positives.

Stress may play a role in misdiagnosis because individuals who have experienced stress may be more likely diagnosed as having dissociative identity disorder.

What is misdiagnosis?

Misdiagnosis is described as an incorrect conclusion about the cause of a disease or problem.

Stress is a reaction marked by emotional exhaustion, depersonalization manifesting in cynicism and detachment from work, and a lack of sense of personal accomplishment.

In conclusion, Misdiagnosis can have serious consequences on a person's health.

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PLEASE HELP ME THIS IS DUE TONIGHT ;-; ILL MARK U BRAINLIEST



In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.

Answers

Answer:

Maps have the advantage of objectivity and presentation of all phases of mitosis, but their disadvantage is the suppression of information, which can confuse students. A scientific model (or map) must be able to present a scientific process or element as it actually occurs, or as close to it

Explanation:

how can you tell if an earthquake has occurred?​

Answers

Scientists can examine sediment samples to get an idea of when major earthquakes occurred in the past. By measuring the amount of time between events, they can come up with a rough idea of when a major quake might hit.

Which of the following is NOT a disadvantage of asexual reproduction?
A. Does not need a mate
B. Little genetic variation
C. Mutations can occur
D. All susceptible disease

Answers

Answer:

A

Explanation:

It is an advantage to not need a mate so the organism doesnt need to spend as long looking for one

Hope that helps

Answer:

A. Does not need a mate

Explanation:

Had to change my answer so nobody got it wrong

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