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Serjik [45]
3 years ago
8

Help l m a o ........​

Biology
1 answer:
777dan777 [17]3 years ago
4 0

Answer:

D

Explanation:

LKM iF i AM CORRECT

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A scientist observed a bactirial specimen obtained from mud in a swamp. The bacteria are producing hydrogen sulfide which create
emmainna [20.7K]

<u>Answer:</u>

<em>Reduction of sulfur compounds and the release of hydrogen sulfide is happening here.</em>

<u>Explanation:</u>

Sulfur is an important element in the sulfur cycle. Sulfur compounds can be found on earth in various forms. They can be found in mineral rocks and organic matter. It is the <em>work of bacteria to reduce sulfur</em> compounds and convert them to sulfides.

There are different types of bacteria that reduce various sulfur containing compounds. They are <em>sulfate-reducing bacteria, sulfur-reducing bacteria, sulfite reducing bacteria etc.</em>  In a swamp there is  low oxygen availability and organic matter decays in this condition.

<em>The sulfate reducing bacteria oxidizes the organic matter  and releases Hydrogen sulfide.</em>

4 0
3 years ago
Describe the two different notations used to specify isotopes and give an example of each.
Georgia [21]
There are two ways that can be used to name isotopes of an element. This is best illustrated by examples. We'll use the element chlorine for simplicity.

The first example is the more common one. The formula for this notation is E-m where E is the name of the element and m is the mass number. 
(1) Chlorine-35
(2) Chlorine-37
(3) Chlorine 38

Another is less commonly used. The formula for this notation is m^ a L where m is the mass number, a is the atomic number and L is the first letter of the element.
(1) 35^ 35 Cl
(2) 37^ 35 Cl
(3) 38^ 35 Cl
8 0
3 years ago
What happens during the four stages of mitosis
riadik2000 [5.3K]

Phosphate is when DNA has already been replicated. Metaphase is when the spindle attaches to the chromosomes. Anaphase is when the cells split and are called daughter cells. Telophase is when the nuclei is formed.  

5 0
3 years ago
explain why the top of an energy pyramid does not have an arrow showing energy going back down to the bottom.
SCORPION-xisa [38]
<span>The answer to your question is that all of the energy is ultimately radiated into empty outer space as heat. The second law of thermodynamics mandates that all processes that involve the transfer of energy MUST radiate a portion of this energy into space as waste heat. This is why when you run down the street you get hot and sweaty, and this is why automobiles MUST have a functioning radiator and nuclear power stations MUST have evaporation cooling towers or else be located near a large body of water to exchange excess waste heat into, etc., etc. It is also true that the transfer of energy at each step up the food chain is very inefficient. They say it takes around 50 lbs of corn to produce one pound of beef, and it probably takes 20-30 pounds of beef to produce one pound of human tissue. The rest of the energy just goes into your living room as radiated body heat. I hope this helps.</span>
4 0
4 years ago
Read 2 more answers
Zebra mussels are known for out competing other mussels and clogging water intake valves. What is the most specific term for a s
MissTica
Zebra mussels are an indigenous species.
7 0
3 years ago
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