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
saul85 [17]
3 years ago
8

What is combustion?what are the essential conditions required for combustion?​

Biology
2 answers:
Sophie [7]3 years ago
8 0

Answer:

The process of burning something. Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel.

Explanation:

USPshnik [31]3 years ago
6 0

Answer: ➢ Combustion

Combustion is the process by which oxygen reacts with a fuel and releases heat

energy.

You might be interested in
At which stage shown below does the frog use both skin and lungs for gas exchange
a_sh-v [17]

Frogs, like salamanders, newts and toads, are amphibians. Most amphibians begin their life cycles as water-dwelling animals, complete with gills for breathing underwater. As they grow to adulthood, amphibians normally become land-dwelling creatures, lose their gills and develop lungs for breathing. Frogs are no exception to this process and are able to breathe through their lungs once they reach adulthood.

Larval Stage

Frogs still in the larval stage, called tadpoles, are very different in outward appearance and internal physiology from their adult counterparts. Most notable is the presence of gills instead of lungs during this stage. Tadpoles can also take in oxygen through their skin, a trait that aids in gas exchange (bringing in oxygen and expelling carbon dioxide, as with lung respiration) while the tadpole is living completely underwater.

Maturation

As a frog matures from tadpole to adult, it loses its gills and develops functioning lungs. During this transition, and after maturity, frogs are still able to breathe through their skin. This trait is known as “bimodal breathing,” in which an animal uses two different systems for bringing in oxygen. These two different breathing systems allow adult frogs to shift between aquatic habitats (which require skin respiration) and land habitats (which are more suited to lung respiration) with ease.

Skin Respiration

An adult frog’s thin and permeable skin allows it to take in oxygen, even when completely submerged. Oxygen readily passes through this thin membrane-like skin, providing the frog with the oxygen it needs to stay alive under water without the need for gills. Because of the permeability of a frog’s skin, moisture is lost easily and most frogs must remain in a moist or humid environment in order to retain their water levels.

Lung Respiration

Compared with many other amphibians, frogs have relatively well-developed and complex lungs, which are subdivided and contain many alveoli—tiny sacs that are responsible for gas exchange within the lungs. Unlike mammals that control their breathing with the diaphragm, frogs use their mouths and nostrils in tandem to bring air into their lungs. When a frog breathes in, it lowers the floor of its mouth and relaxes its throat. Then it opens its nostrils to allow air to enter into the newly expanded mouth and throat, at which point the frog contracts its mouth floor and forces air into the lungs.

3 0
3 years ago
How is Darwin's theory viewed in today's society
nika2105 [10]
In today's society, the theory of Darwin - the theory of evolution, which states that all organisms have evolved from simple organisms to more and more complex organisms all the way to us, is favoured and viewed as something that seems to be true, at least when considering all the available evidence. 
4 0
3 years ago
Heap or stock method of manure preparation through earthworm farming​
Lemur [1.5K]

Explanation:

yrv-thks-szm live bio practical class is going on here

7 0
3 years ago
Read 2 more answers
What’s the use of short tandem repeat?
Korolek [52]

Answer: Ok So A short tandem repeat is a microsatellite with repeat units that are 2 to 7 base pairs in length, with the number of repeats varying among individuals, making STRs effective for human identification purposes.STRs are extremely useful in applications such as the construction of genetic maps (49), gene location, genetic linkage analysis, identification of individuals, paternity testing, as well as disease diagnosis 50., 51.. STR analysis has also been employed in population genetics.

<h3>Hope this helps have a awesome night/day❤️✨</h3>

Explanation:

5 0
2 years ago
How many lactobacillyus present in 1 lire of curd packet
murzikaleks [220]

A genus of gram-positive, microaerophilic, rod-shaped bacteria occurring widely in nature. Its species are also part of the many normal flora of the mouth, intestinal tract, and vagina of many mammals, including humans. Pathogenicity from this genus is rare.

hope it helps

5 0
3 years ago
Other questions:
  • While performing a physical assessment of a female client, a nurse notices hair on the client's upper lip, chin, and cheeks. whi
    12·1 answer
  • The larvae of honey bee are voracious feeder why​
    5·1 answer
  • Which includes the physical characteristics of an organism? gene allele genotype phenotype
    12·2 answers
  • What is the relationship between genes and dna molecules?
    13·1 answer
  • describe how the theory of evolution is supported by fossils, comparative anatomy, comparative embryology, biogeography, and mol
    11·1 answer
  • List some cell types in which mitosis is expected to occur. List a cell type in which meiosis is expected to occur.
    14·2 answers
  • I need to know the answer to the question
    12·2 answers
  • Which occurs during both DNA replication and protein production
    13·2 answers
  • Give a positive and a negative impact of an environmental law or regulation.
    10·1 answer
  • I have science homework pls help its due at 11:59
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!