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
Oksana_A [137]
3 years ago
5

What type of reaction is combustion of coal? A. endothermic B. physical C. heat-absorbing D. exothermic

Biology
2 answers:
nydimaria [60]3 years ago
4 0
Exothermic - hope that helps x
Leni [432]3 years ago
4 0

Answer:

Redox Reaction

Explanation:

Burning coal is a chemical change called combustion. A combustion is the chemical reaction (redox reaction) of coal with oxygen O2. It is exothermic, which means it releases energy : hence the heat.

You might be interested in
Match each word or phrase to identify whether or not each word or phrase represents a
Alexxandr [17]

The reason for the change in the hands of the chimpanzee include:

  • Crossbreeding between gorillas and chimpanzees( Represents a reason for the change)
  • Mutations in chimpanzee DNA ( Represents a reason for the change)
  • Differences in the ways chimpanzees use their hands ( Doesn't represents a reason for the change)
  • Sexual reproduction ( Doesn't represents a reason for the change)
  • Differences in enhancer sequences( Represents a reason for the change).

<h3>What is mutation?</h3>

Mutation is defined as the alteration in the genetic makeup of a living organism which may occur due to the following:

  • When there is spontaneous break down of deoxyribonucleic acid (DNA).
  • Change in a single nucleotide of the DNA.
  • when there is additions or deletions of nucleotide in a DNA strand.

A change can be noticed in an animal such as Chimpanzee when the following occurs:

Mutations in chimpanzee DNA: This can alter both that anatomy and the physiological features of the organism involved.

Crossbreeding between gorillas and chimpanzees: When there is cross breeding between a chimpanzee and a gorilla, it will lead to a genetic diversity which can be observed as a change in the hands of the chimpanzee.

Learn more about mutation here:

brainly.com/question/29352366

#SPJ1

4 0
1 year ago
The variety of organisms within an ecosystem is characteristic of which type of diversity? a. Genetic diversity b. Ecosystem div
Brrunno [24]

Answer:

The answer is C. Species diversity or B. Ecosystem diversity everyone thinks it either those 2 nobody really knows.

7 0
3 years ago
Read 2 more answers
Which part of the plant body serves as anchorage to the plant?
Vilka [71]

The part of plants that serves as anchorage is the root.

<h3>What anchors plant?</h3>

Plants can grow on different media ranging from soil, rocks, to water.

The primary organ that anchors plants to these growing media is the root.

Plant roots also serve to conduct mineral nutrients and water from growth media to the body of the plants.

More on plant's roots can be found here: brainly.com/question/8647279

#SPJ1

4 0
2 years ago
The experiment that Stanley L Miller and Harold C Urey conducted regarding the origin of life from inanimate matter was conducte
nignag [31]
For giving you understanding ; we need Free O2 but Oxygen is also available in H20 right why dont we use it !!

As the early atmosphere was reducing as there was no free oxygen but it was later produced by chemoautotrophic bacteria !! Living thing release O2 in atmosphere thus making it oxidising in nature and then life evolves !!
4 0
3 years ago
Read 2 more answers
Nucleic acid *
andreev551 [17]

Answer:

i

Explanation:

long chains of repeating subunits, called nucleotides

A nucleotide is the basic building block of nucleic acids

7 0
2 years ago
Other questions:
  • What competition exists between the turtles and the fishes
    6·2 answers
  • Compared with boys, girls tend to spend
    5·1 answer
  • Describe the conditions under which acclimatization occurs. are acclimatizations passed on to a person’s offspring?
    12·1 answer
  • HIGHEST POINTS!!! I WILL BE GIVING BRAINS I JUST DONT FEEL LIKE DOING WORK.
    14·1 answer
  • Dr. Sheffield is a clinical psychologist who specializes in treating pathological gambling. Pathological gambling is defined as
    10·1 answer
  • What nonliving things might you find in an ecosystem?
    11·1 answer
  • Resistance to antibiotics results from variations in the genetic code of streptococcus pneumoniae. Which type of molecule encode
    10·1 answer
  • Consider how sedimentary rocks are formed, from sediments! Sediments are composed of particles that often come from existing
    12·2 answers
  • Explain how matter cycles throughout this food web. Where do the atoms/molecules travel?
    5·1 answer
  • 20 POINTS!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!