Answer:
Archaebacteria
Explanation:
Carl Woese categorised the bacteria into two domains called the Archaebacteria and the Eubacteria.
The Archaebacteria is the group of bacteria which can survive in the extreme condition as they posses the characteristics of both the prokaryotes and some eukaryotes. The bacteria are known as the extremophiles.
In the given question, the bacteria which lives in the gut of the human uses methane gas and thus are known as the methanobacteria. These bacteria are considered the archaebacteria as they methane for survival.
Thus, Archaebacteria is correct.
Answer: organic
Explanation: Its melting point is -44 °C
nasopharynx, oropharynx, laryngopharynx in these order does air inhaled through the nose travel, from superior to inferior.
<h3>
What is nasopharynx?</h3>
- Behind the nose, the top of the throat.
- The nasopharynx has a passageway leading into each ear on either side.
- The top section of the throat (pharynx), which is located behind the nose, is known as the nasopharynx.
- It is a box-shaped chamber with edges that are one and half inches wide.
- It is located just behind the nasal passages and above the soft palate, which is the soft portion of the roof of the mouth.
- A uncommon kind of cancer that affects the portion of the throat that connects the back of the nose to the back of the mouth is called nasopharyngeal carcinoma (the pharynx).
- Each year, 260 persons in the UK are given a nasopharyngeal cancer diagnosis.
- Nasopharynx's primary job is to join the remainder of your respiratory system to your nasal passageways.
- As a result, air can pass easily from your nose to your lungs.
- Nasopharynx is also beneficial: Maintain proper pressure between your middle ear and nasopharynx.
Learn more about nasopharynx here:
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answer: The sperm will not survive the acidic conditions in the vagina
The fluid produced by the urethral glands neutralizes any residual acidity in the urethra (left there because of the urine that passed previously), that way it won't harm the sperm. For the same reasons, helps to neutralize the acidity of the vagina.