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stepladder [879]
3 years ago
14

If you find a blood worm, but no animals from group A or B, the pollution level would be?

Biology
1 answer:
solong [7]3 years ago
4 0
If these animals are found in a river, it shows that the river is clean. However, some animals are adapted for surviving in polluted conditions and can survive in low oxygen concentrations. Examples are blood worms and sludge worms. The presence of these species indicates there is a high level of water pollution.
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Vladimir79 [104]

Answer:

The answer is D!

Explanation:

This dish is actually called fermented cabbage. Hence the process of lactic acid fermentation. I also took the test. Good Luck!

Hope this will help :)

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PLS HELP IT IS DUE IN 20 MINUTES.
Orlov [11]

Answer:

The correct answer is -

1. Blending - C

2. Straining - D

3. Detergents - B

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5. Alcohol - A

Explanation:

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Blending use to break the cell wall of the plants such as pea cells. After breaking the cell wall one needs to dissolve the cell membrane made up of lipids with the help of soap or detergents. After the dissolving cell membrane, there is a chance to DNA gets damaged by various chemicals, therefore, alcohol is used to allow DNA to form clumps or precipitate.

Straining is used to separate the cell organelle, dissolved cell membrane from DNA and protein. Papain is a meat tenderizer and a protein enzyme that cuts or breaks the protein.

7 0
3 years ago
If the net force acting on an object is equal to zero newtons, is it moving or at rest? Explain.
kotegsom [21]

Answer:

Newton's First Law of Motion

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tekilochka [14]
The answer is sugar
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Which of the following scientists DID NOT disprove spontaneous generation? *
ludmilkaskok [199]

Hooke didnt disprove spontaneous generations!

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