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gulaghasi [49]
3 years ago
11

How does spirogyra survive in a dry pond?​

Biology
1 answer:
bixtya [17]3 years ago
6 0

Answer:

I had a long answer that I would have loved to share but I can't because brainly does not like the words using and there is no way around it,  tried using every synonym on the internet... LOL sorry

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It has been estimated that 99% of the intestinal bacteria are A. facultative anaerobes.B. obligate aerobes.C. facultative aerobe
Klio2033 [76]

Answer:

Obligate anaerobes. (Ans. D)

Explanation:

Anaerobes: They are micro-organisms that do not require energy oxygen for metabolism. They can only survive in an environment that lacks oxygen.

Obligate anaerobes are bacteria typically living in various places naturally. Many of obligate anaerobes living in the human body, in places such as the mouth and gastrointestinal tract (most of the obligate anaerobes present their) where oxygen level present in very low concentration.

Obligate anaerobes do not contain several enzymes needed to detoxifying oxygen present in the cell. Oxygen produces several byproducts in the presence of water such as hydrogen peroxide, it is a week acid and affects no. of enzymes present in anaerobic cells. In a high level of oxygen anaerobic cells become more acidic and not able to function.

So that's why they are found in no oxygen or low oxygen environment like the gastrointestinal tract.  

4 0
3 years ago
Which of the four main layers of Earth rotate in different directions to produce Earth's magnetic field.?
mihalych1998 [28]

Answer:

Earth has various layers: the covering, the mantle, the fluid outer core and the inner core.

The Earth's attractive field controls the course and speed at which Earth's internal and external centers turn, despite the fact that they move in inverse ways, new research proposes.

3 0
3 years ago
A major disturbance that the ecosystem was able to recover completely from.
kolezko [41]

Hello. Your question is incomplete. However, I managed to find a question exactly like yours on the internet and managed to realize that you forgot to say that your question asks you to give an example of the statement presented above.

Answer:

A major disturbance from which the ecosystem was able to recover completely was the disease that almost wiped out all of Ireland's potato in 1840.

Explanation:

You may have heard of the Irish Potato Famine, which was a time when the Irish population lived very difficult days, after an illness that almost decimated the country's potato plantations.

The potato was the main source of food for the Irish, but in 1840, a fungus called Phytophthora infestans, managed to infect almost all potato plantations in the country, preventing the potato from being harvested and could be consumed. This created major economic and social problems in Ireland, as people suffered from hunger, poverty and the diseases that arose, which caused many Irish people to immigrate to other countries, or to die.

The fungus plagued the ecosystem for years and only started to decrease in intensity in 1850, once the ecosystem started to recover. Currently, although the pest still exists, the Irish ecosystem is completely recovered and the pest is controlled and is unable to make such an impact.

8 0
3 years ago
A drug company is testing the effectiveness of a new blood pressure medicine using rats as the test subjects
Yanka [14]

A constant factor could be the dose of the drugs  and the species of the rats used.

<h3>What is a constant factor?</h3>

In an experiment, a constant factor is one that is not allowed to change al through the experiment. This one must be held as the same and not allowed to vary. A constant factor could be the dose of the drugs  and the species of the rats used.

The factor that would be different for the experimental group and the control group  the administration of the new drug.

Learn more about experiment:brainly.com/question/11256472

#SPJ1

6 0
1 year ago
How does dna lead sientest to better classify organisims
trasher [3.6K]
By knowing the details on where and what about the organism, this helps with a lot of crime such as murder.
4 0
3 years ago
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