1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andrey2020 [161]
3 years ago
13

List the four stages of coal formation.

Biology
2 answers:
Anastaziya [24]3 years ago
6 0

Answer:

eat, lignite, bituminous, and anthracite.

Explanation:

The stage depends upon the conditions to which the plant remains are subjected after they were buried: the greater the pressure and heat, the higher the rank of coal.

m_a_m_a [10]3 years ago
5 0

Answer:

There are four stages in coal formation: peat, lignite, bituminous, and anthracite.

Explanation:

Stage one: Peat is the first stage in the formation of coal. Normally, vegetable matter is oxidized to water and carbon dioxide. However, if plant material accumulates underwater, oxygen is not present and so only partial decomposition occurs. This incomplete destruction leads to the accumulation of an organic substance called peat. Peat is a fibrous, soft, spongy substance in which plant remains are easily recognizable. It contains a large amount of water and must be dried before use. Therefore, it is seldom used as a source of heat. Peat burns with a long flame and considerable smoke.

Stage two: Lignite, the second stage, is formed when peat is subjected to increased vertical pressure from accumulating sediments. Lignite is dark brown in colour and, like peat, contains traces of plants. It is found in many places but is used only when more efficient fuel is not available. It crumbles easily and should not be shipped or handled before use.

Stage three: Bituminous Coal is the third stage. Added pressure has made it compact and virtually all traces of plant life have disappeared. Also known as “soft coal”, bituminous coal is the type found in Cape Breton and is our most abundant fuel. It is greatly used in industry as a source of heat energy.

Stage four: Anthracite, the fourth stage in coal formation, is also known as “hard coal” because it is hard and has a high lustre. It appears to have been formed as a result of combined pressure and high temperature. Anthracite burns with a short flame and little smoke.

You might be interested in
1 point
ololo11 [35]
Chromosomes is the answer I think
3 0
2 years ago
Plant cell have large,central for the storage of water and other materials
Otrada [13]

Answer:

Large Vacuole

Explanation:

Plants cells have large vacuoles to store water

5 0
3 years ago
Which phase of cell division is shown?
blagie [28]
The answer would be C
3 0
3 years ago
Read 2 more answers
What are all the reasons why ketone bodies are produced in the body?
aliya0001 [1]

Answer:

When Glucose is in short supply.

Explanation:

Ketone bodies are produced in mitochondria of liver cells to augment the shortage of glucose in the body. Shortage of blood sugar glucose can occur due to fasting, rigorous exercises or medical conditions.

7 0
3 years ago
Read 2 more answers
What’s the reason scientists still refer to viruses as non- living ?
Sonja [21]

Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.

6 0
3 years ago
Other questions:
  • Which organelles are involved in energy conversion? (1 point)
    12·1 answer
  • 1. Plants are considered living because
    12·2 answers
  • Which group of moths is better adapted to survive the hunting cycle
    15·2 answers
  • How does soil quality affect the characteristics of ecosystems?
    6·2 answers
  • Which statements best describe shared characteristics? Select two options.
    14·1 answer
  • Genetics: A geneticist is studying two genes. Each gene can be either dominant or recessive. A sample of individuals is categori
    11·1 answer
  • Which statement is true of y chromosomes
    6·2 answers
  • A liver cell has a volume of 5000 μm3. Its total membrane area, including the inner membranes lining organelles as well as the c
    7·1 answer
  • Why do plants go dormant in the fall and winter months? A. There isn't enough energy given off for them to capture, so they try
    10·1 answer
  • Where are photoreceptors located.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!