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sergiy2304 [10]
3 years ago
15

Which of the following is caused by pollutants from farm runoff, feedlots, or septic tanks? . . Increased fecal coliform . . Low

dissolved oxygen . . Temperatures greater than 45°C . . pH below 6.5 .
Biology
2 answers:
Natalka [10]3 years ago
6 0

Answer:  Increased fecal coliform

Explanation:

The fecal coliform is a strain of bacteria which can be found in colonies in the digestive tract of humans and animals. It comes out along with the fecal discharge from the body. It is likely to be present in the farm runoff because it can be an ingredient of cattle dung based manure which could be used in farm land. Also will be present in the feedlot because of the daily discharge of dung by the cattles in the feedlot. In the septic tank the human or animal fecal matter will exhibit a colony of the coliform bacteria. If the solid and liquid matter from any of these discharges enters into a fresh water body will likely to cause pollution because of the presence of fecal colliform. It results in appearance of foul smell in water and likely to deteriorate the quality.

alexdok [17]3 years ago
3 0

Answer:

The correct answer is a = increase in fecal coliforms.

Explanation:

Hello! Let's solve this!

Coliform fecal bacteria are bacteria that cause intestinal problems. A subgroup is Escherichia coli. These bacteria are found in the intestines of people and animals but there are some that can cause diseases.

The correct answer is a = increase in fecal coliforms.

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Which statement describes experimental evidence?
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Answer:

Results are validated when other scientists performs the same experiment and conclude with the same result.

Explanation:

Experimental evidence gives confirmation especially in science.Scientists starts an experiment by following some protocols such as observation,hypothesis,collection of data literature review,methodology,Experiments (trial and tests) finally results and discussion.Results are validated as experimental evidence. Eventually come to a conclusion.

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3 years ago
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Which of these actions is a sustainable agricultural practice
nexus9112 [7]

Answer:

A. Cultivating crops that require less water

Explanation:

A sustainable agriculture practice is one that reduced the impact of that human activity on the environment.

A. Cultivating crops that require less water is certainly one sustainable practice because it respects the environment.

B, C and D answers are NOT sustainable practices and put in danger the reserves of water people will need to drink.  On top of that, B and C would generate pollution for the transport.

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If the density of ethanol is 0.789 g/mL, how many milliliters are produced in this reaction?
yarga [219]

The volume of the ethanol is 6.7 mL

<h3>What is the density of the ethanol?</h3>

We know that density is defined as the ratio of the mass to the volume of an object. We know that the density is said to be an intrinsic property and this means that we can use the density of the object to be able to obtain the kind of object that we are dealing with.

We have the information that the mass of the carbon dioxide that can be obtained from the reaction is about 10 g. We can now use this to obtain the number of moles by the use of the formula;

Number of moles = mass/ molar mass

= 10 g/44 g/mol

= 0.23 moles

From the reaction equation:

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= 5.29 g

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volume = 5.29 g/0.789 g/mL

= 6.7 mL

Learn more about ethanol;brainly.com/question/250024

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7 0
1 year ago
What is the difference between replication and repetition? A. Repetition occurs when multiple sets of measurements are made duri
Ierofanga [76]

What is the difference between replication and repetition

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