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icang [17]
3 years ago
7

What is coal composed of?

Biology
2 answers:
kkurt [141]3 years ago
8 0

Answer:

coal contains Carbon, hydrogen sulfur, oxygen and nitrogen.

Explanation:

We use it as a fuel in power plants.industrial furnaces.domestic cooking etc.

It is mostly used in huge boilers to make steam and used for electrical power generation

LuckyWell [14K]3 years ago
4 0

Answer:

Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Hope this helps.

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Vladimir79 [104]

Answer:

Hormone levels generally decrease.

Explanation:

<em>The graph showed that hormone levels after ovulation generally decrease.</em>

The menstrual cycle of women generally have 3 phases which include:

  1. <em>The follicular phase</em>
  2. <em>The ovulatory phase</em>
  3. <em>The luteal phase</em>

The follicular phase is characterized by low levels of oestrogen and progesterone and a slightly high level of follicle stimulating hormone which ensures that follicles within the ovary develop.

The ovulatory phase is characterized by a surge in the luitenizing hormone (which stimulates the release of eggs) and follicle stimulating hormone with a decrease in the level of oestrogen and a gradual increase in the level of progesterone.

The luteal phase is characterized by a general decrease in the levels of luitenizing hormone and follicle stimulating hormone while oestrogen level may remain high.

5 0
3 years ago
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in the lab the term “phase change” refers to a change of boiling point a change of freezing point a change of flash point a chan
elena-14-01-66 [18.8K]
It refers to a change of  state.
7 0
4 years ago
I don't know about this application.​
borishaifa [10]

Answer:

Show us the application first

Explanation:

7 0
3 years ago
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Who is structure occurs in meiosis but not mitosis
lana [24]

Answer:

Crossing over occurs in meiosis but not in mitosis

Explanation:

Miosis is a process in which diploid cell  becomes a haploid cell.which is essential for sexual reproduction In mitosis the daughter cells are identical whereas in meiosis the daughter cells are different due to crossing over.the process of crossing over does not occur in mitosis.

8 0
4 years ago
Is a sperm cell diploid or haploid
Westkost [7]

Answer:

haploid

Explanation:

because it is formed after meiosis

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3 years ago
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