1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elixir [45]
3 years ago
15

What is a relatively dense aggregation of fishes, squid, and other mesopelagic organisms capable of reflecting a sonar pulse tha

t resembles a false bottom in the ocean. Its position varies with the time of day.
Biology
1 answer:
lawyer [7]3 years ago
8 0

Answer:

Deep scattering layer, DSL

Explanation:

The deep scattering layer (DSL) also known as "<em>deep sound layer</em>", refers to an oceanic deep layer, more or less defined, that reflects sound and that is formed by a wide variety of animals. It is present in almost every ocean. It is produced by the presence of many organisms of different species that can disperse the sonar waves sent by a sonar equipment.

It was discovered through the ships´ sonar. Whenever they met a layer in which the sound hit, and was often confused with the bottom of the ocean. This is why the DSL is refered to as the "fake bottom".

These animals form layers of not less than 10 meters thick and might easily reach up to 50 meters thick. These layers are often found between 50 and 200 meters deep and can be seen going up and down every day according to the daily vertical migration.  

You might be interested in
In places where seafloor spreading is occurring,you would expect to see...
yKpoI14uk [10]
The correct answer is D.
Seafloor spreading is a process of creating seafloor crust out of volcanic materials that are emerging from the Earth's core at the mid-ocean ridges.
This is made possible by the moving of Earth's tectonic plates.
5 0
3 years ago
How does the electron transport chain active during the Krebs cycle affect the hydrogen ion concentration in a mitochondria
belka [17]
Electron transport trains create a concentration gradient of hydrogen ions outside the mitochondria and fewer inside the mitochondria and creates energy(ATP) by diffusing the hydrogen ions back in
8 0
3 years ago
Most neurodegenerative diseases involve inability to remove misfolded/aggregated proteins. The cellular organelle that often fai
klasskru [66]

Answer: c. proteasome

Explanation:

Proteasomes are extremely important multi-catalytic proteases and are involved in various cellular functions. The proteasome is an essential component of eukaryotic cells and is responsible for the ATP-dependent proteolytic degradation of most cellular proteins. They are present in the nucleus and cytosol and can represent up to 1% of total cell proteins. Proteasomes generally degrade proteins to small peptides, most of which are rapidly hydrolyzed by cytoplasmic exopeptidases. It catalyzes the rapid degradation of many enzymes, regulatory proteins, and eliminates abnormal proteins resulting from mutation or damaged proteins. The inability of this cellular organelle can lead to neurodegenerative diseases, such as Parkinson´s disease.

8 0
3 years ago
Which of the following allows water to move from the roots to the leaves in plants?
ch4aika [34]

Answer:

The capillary action of water helps it to move from the roots to the leaves in plants

Explanation:

7 0
3 years ago
How does Antarctic soil differ from soil found in warmer, wetter climates?
Taya2010 [7]
Antarctic soil differs from other soil because it is formed from volcanic rocks
7 0
3 years ago
Read 2 more answers
Other questions:
  • Have you ever sat around a campfire or watched flames flicker in a fireplace? The burning of wood is a chemical reaction. A chem
    9·1 answer
  • The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict abo
    9·2 answers
  • The Texas coastal plain on the Gulf of Mexico is a major wetland zone. This coastal plain has been enlarged over the last sixty
    12·2 answers
  • Human spermatozoa:
    8·2 answers
  • ___ are capable of differentiation to form specialized cells.
    12·1 answer
  • What is 100×25<br><br><br>is it 125<br>or 1025
    14·2 answers
  • What are energy-giving nutrients
    11·1 answer
  • How might biology help you to better understand environmental issues?
    11·1 answer
  • What are two parts that all fish share
    14·1 answer
  • Jack did an experiment to determine how different types of lights affect plant growth. He grew 5 plants in darkness, 5 plants in
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!