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Rom4ik [11]
3 years ago
10

Suppose a large number of dead fish are found floating in a lake. how would you determine whether they died from cultural eutrop

hication or from exposure to toxic chemicals?
Biology
1 answer:
Otrada [13]3 years ago
5 0
To determine the reason for the fish death, do the following:
1. Test the water for the presence of organic substances that may be poisonous to the fish.
2. Test the dissolved oxygen concentration of the lake at different locations and at different depths. 
3. Perform full toxicological examination of the lake to determine if any pollutant or poisonous chemical is present in the lake.<span />
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his nutrient is cycled between living things and the soil. Plants absorb this nutrient from the soil and turn it into organic co
djverab [1.8K]

The nutrient is phosphorus

<h3>The phosphorus cycle</h3>

Phosphorus cycles between living components of the earth (biosphere) and the soil (geosphere).

The element's reservoir is mainly the sediments of the ocean and rocks. Phosphorus gets into the soil by weathering of rocks.

Plants are able to pick the element up from the soil and animals are able to get their phosphorus by consuming plants.

When plants and animal die, their body decomposes and the phosphorus in them enters the soil.

Thus, the cycle being referred to in the illustration is the phosphorus cycle.

More on phosphorus cycle can be found here: brainly.com/question/15020567

#SPJ1

3 0
2 years ago
What are the characteristics of the vertebrate's nervous systems?
Delicious77 [7]

Answer:

Vertebrates contain nervous system which is highly specialized organ.

Explanation:

The nervous system is the complex system in the vertebrate body which is composed of central nervous system that contain brain,spinal cord and peripheral nervous system which contain cranial nerve, spinal nerve,involuntary nerve etc.

The nervous system contain neurons that mainly transmit signal to the different parts of the body.

The peripheral nervous sytem contain somatic and visceral part.

The grey matter and white matter are the 2 areas in vertebrate nervous system.

6 0
3 years ago
Please help me?? I need help labeling the graph using the word bank
sladkih [1.3K]

Answer:

Explanation:

  1. Oceanic Plate
  2. Subduction Zone
  3. Convection Currents
  4. Asthenosphere
  5. Continental Plate

The Oceanic Plate is located near the ocean ridge. Which represents where magma creates new oceanic crust.

The Subduction Zone is where the tectonic plates meet.  These are called plate boundaries.  

Convection Currents are what drives the movement of rigid tectonic plates in Earth's molten mantle.

The Asthenosphere is the upper layer of the mantle. Which is below the lithosphere (Continental Plates).  

Continental Plates are the outer shell of the mantle.

Let me know if this helps!

7 0
3 years ago
How does a topographic map help an architect?
Natalka [10]

Answer:

Of course topography affects architecture. The ground provides the basic support for the building. If you are building on a highly sloped site, an architect must consider the slope of the site in determining the finish floor elevation, and if multiple entry levels will be needed to get in and out of the building.

Explanation:

7 0
4 years ago
Use the drop-down menus to complete the sentences.
creativ13 [48]

Answer:Chlorophyll, carbon dioxide, Oxygen

Explanation:

4 0
4 years ago
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