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avanturin [10]
2 years ago
13

The food web above represents feeding relationships in a biological community near a deep-sea hydrothermal vent. Hydrothermal ve

nts are geysers on the seafloor that gush super-heated, mineralrich water. The seawater surrounding hydrothermal vents typically contains carbon dioxide (CO2), molecular hydrogen (H2), hydrogen sulfide (H2S), and methane (CH4). Sunlight, however, fails to reach the seafloor where deep-sea hydrothermal vents are located. As part of an investigation, researchers collected living specimens from an area near a deep-sea hydrothermal vent. Mussels in the collection were found to be dependent on molecular hydrogen in seawater. Also, the researchers discovered multiple species of bacteria living in the gills of the mussels.
Mussels use gills for filter-feeding and gas exchange with the surrounding seawater. On the basis of their experimental results, the researchers hypothesized that some bacteria living in the gills of the mussels are capable of chemosynthesis. Which of the following best explains how biological communities near deep-sea hydrothermal vents can exist in a habitat lacking sunlight?
a) Environmental conditions on some distant planets resemble those experienced by organisms
living near hydrothermal vents.
b) Heterotrophs metabolize carbon-containing compounds produced by the photosynthetic
organisms that live on the seafloor.
c) Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.
d) Some organisms that can tolerate high temperatures are single celled, whereas others are multicellular.
Biology
1 answer:
Pani-rosa [81]2 years ago
6 0

Answer: c) Some organisms rely on energy captured from inorganic compounds to drive basic biological processes.

Explanation:

Deep-sea hydrothermal vents are hot spots of geothermal water. The organisms living in deep-sea vents cannot obtain energy from sunlight. They are dependent on chemosynthesis, which involves the utilization of inorganic substances to produce organic substances, which allows their survival and act as a source of energy. In the given situation, bacteria present on the surface of mussels are capable of chemosynthesis also the mussels are dependent upon inorganic hydrogen in seawater. Thus chemosynthesis supports the survival of organisms living in the deep sea vents.

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MRSA is a prime example of evolution at work. When doctors prescribe a medication two types of things can lead to resistance; prescription of unessecary antibiotics, or the patient doesn't follow doctors instructions when taking medications. The premise tends to be the same in either case with a slight variation. As Staph bacteria naturally occurs in the skin, if someone is being treated and doesn't have a staph infection, but is taking antibiotics, the staph bacteria actually can developed a resistant strain so that a break in skin actually leads to a MRSA infection. For those being treated for a nonresistant strain, when they don't follow doctors instructions to complete antibiotics even if they are feeling better, there is a reason why you should. Each copy of bacteria is not exactly the same sometimes developing mutations with some being a bit more difficult to destroy, which is why the full course of antibiotics is needed to destroy them. If it is not completed the bacteria that is left will actually replicate causing a full blown resistant infection.

The main issue with MRSA is that it is a common bacteria that has mutated and groan to be resistant to bacteria. Antibiotics are everywhere in Healthcare settings and many people that aren't compliant with medication regimes end up in the hospital for some of the most minor things. However their hospital visit can leave a massive amount of Staphyloccoaus bacteria after their visit, and can hide anywhere. In a normal human we can easily keep these bugs out, but a break in the skin of people who have decreased immune system efficiency (like many of the people that actually need to be in the hospital) when exposed can contract a dangerous infection. This also is advanced by the fact that we don't wash rooms with a powerhose or take a shower after every patient encounter... What I mean is that Healthcare provisera can have MRSA on their skin, without realizing it and if they are uncareful can pass it to those who are susceptible to it.
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Answer:

Termites can spend time building mounds there by aerating the soil and allowing moisture which support the growth of shrubs, grasses, tress.

Through their mounds, their droppings contain phosphorus and nitrogen which add to the soil nutrients and supports grasses, shrubs and trees growth.

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Termites are commonly found in Savannah ecosystem in African areas and they build mounds. Termites mounds consist of their fecal droppings , saliva and clay.

Termites can spend time building mounds there by aerating the soil and allowing moisture which support the growth of shrubs, grasses, tress.

Through their mounds, their droppings contain phosphorus and nitrogen which add to the soil nutrients and supports grasses, shrubs and trees growth.

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