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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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Using cultural practices to combat pests is generally better for the environment than using pesticides.
STatiana [176]

Answer:

Explanation:

True cause pesticide can end up killing other bugs you don't wanna kill like bees

3 0
3 years ago
Read 2 more answers
A researcher investigates a recently discovered species of plant. The plant has vascular tissues and exhibits a sporophyte and a
Anna71 [15]

The plant contains vascular tissue and has an alternation of generation. But, it lacks seeds. So, the plant is a Pteridophyte.

  • Vascular tissues are absent in thallophytes and bryophytes. They are found in pteridophytes, gymnosperms and angiosperms.
  • The sporophyte and gametophyte generation is common in bryophytes and pteridophytes.
  • Seeds are produced in plants that come under the group gymnosperms and angiosperms. The presence of seeds is the main characteristic of these groups.
  • Thallophytes, bryophytes and pteridophytes lack seeds. The reproduction in plants that comes under these groups occurs with the help of spores.

Thus, the recently discovered species of the plant should be classified based on the presence of vascular tissues, gametophytes and sporophytes. As pteridophytes contain vascular tissues, sporophytes and gametophytes and lack seeds, the plant is a pteridophyte

Learn more about pteridophytes here:

brainly.com/question/12375814

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6 0
2 years ago
An adaptive radiation is________.
erastovalidia [21]

The correct answer is A. A burst of speciation

Explanation:

Adaptative radiation is part of evolution and occurs when a single organism or species diversify into a wide range of species (speciation), this process is called "adaptative" because the speciation occurs due to changes in the environment that make challenging survival usually due to the reduction of resources available and therefore organisms change to adapt to new conditions. Additionally, in adaptive radiation, the new organisms share traits with their common ancestor but also have different and unique traits. Considering this, it can be concluded adaptative radiation a burst of speciation.

8 0
3 years ago
What is the complementary RNA sequence for the following DNA sequence? <br> DNA- CCG ATT AAT
ANTONII [103]

Answer:

Fruintg beach ash crusty suk my fat crocks

Explanation:

Gay

8 0
3 years ago
What type of plant cells does most photosynthesis occur?
Ghella [55]
All plant cells because all plants and or trees use photosynthesis for the same thing.
3 0
3 years ago
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