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Brilliant_brown [7]
4 years ago
15

Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean.

Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.
Biology
1 answer:
Aleksandr [31]4 years ago
7 0

The answer is; D

Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.


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You learned in the reading that some symbiotic relationships are helpful and some are harmful. Look at the symbiotic relationshi
frozen [14]

Answer: Parasitism, Predator-Prey, Competition

Explanation:

The symbiotic relationship is the relationship in which two distinct species are associated with each other. In the symbiotic relation the species may get harm or benefit of association. Parasitism can be defined as the symbiotic relationship in which one species get harmed and other one receives the benefit. For example, malarial parasite plasmodium derives the nourishment from the host body (human). Predator-prey relationship is also harmful as the predator kills the prey to obtain it as food. Competition is harmful in the sense two or more organisms of the same or different species compete for the same resource, the most dominant receives the resource the inferior organism is either killed or harmed in the fight for resources.

7 0
3 years ago
The resulting pain and inflammation when pleural fluid is unable to prevent friction between opposing pleural surfaces is known
Effectus [21]

Answer

The correct option is B.

Reason

            A brief technical explanation for each option is given below.

a. Asthma

                 It is lower respiratory disorder in which air passage way become narrow and swells, produce extra mucus which make difficulty in breathing, and trigger sneezing, wheezing and shortness of breath.

b. Pleurisy

                 It is lung disease in while pleura, lining of lung and chest cavity become inflamed due to accumulation of pleural fluid. The fluid is accumulated through the process of pleural effusion which may be transudate or exudate.

c. Pulmonary hypertension

                           It is a condition in which blood pressure increase in lung arteries. It leads to shortness of breath, swelling of legs and fast heartbeat.

d. COPD

               Stand for chronic obstructive pulmonary disorder. It is a progressive lung disorder accompanied with chronic bronchitis, emphysema and non-reversible asthma.  

e. Emphysema

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6 0
3 years ago
Consider this image of a gazelle.
uysha [10]

Answer:

coat color blending in with dry grass.

Explanation:

the gazelle has a brown colored coat and dry grass is also a similar brown color allowing them to blend in more with their surroundings.

7 0
3 years ago
Ribosomes make:<br> carbohydrates<br> proteins<br> liplas<br> nuclela acids
almond37 [142]

Answer: proteins

Explanation: Ribosomes are the protein builders or the protein synthesizers of the cell.

6 0
4 years ago
How is the chemical compositon of hydrothermal vents fluid different from surrounding sea water
ICE Princess25 [194]
HEY THERE!!

When seawater seeps down into the ocean crust and is heated by the magma, it undergoes lots of chemical reactions. When the fluid rises up through the seafloor, it carries many new chemicals with it, such as-- copper and zinc.
These chemical reactions also remove chemicals from the seawater, such as oxygen and magnesium.

So clearly vebtus fluid is different from sea water .


HOPE IT HELPS YOU.
7 0
3 years ago
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