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Fittoniya [83]
3 years ago
8

Why is damage caused to an ecosystem by adding fertilizer

Biology
1 answer:
Pie3 years ago
3 0
Damage is caused to an ecosystem by adding fertilizer because some of the substances to the fertilizer is toxic or create bad reactions. 


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Describe how fish are farmed
Alex787 [66]

Answer: Fish are farmed by breeding them in controlled environments. Kennels sort of. They are huge cages in man-made resivours with temperature and water control. Once they have grown to be a certain size they are extracted and killed for their meat while the eggs are used to produce another batch of fish. Hope this was helpful :).

6 0
3 years ago
The broadest classification level for organisms is
denpristay [2]

Answer:

kingdom

Explanation:

kingdom is the broadest taxonomical classification

6 0
3 years ago
Why choose that gene for PCR in the bacterial identification lab?
Reika [66]

Answer:

Background

During the course of a bacterial infection, the rapid identification of the causative agent(s) is necessary for the determination of effective treatment options. We have developed a method based on a modified broad-range PCR and an oligonucleotide microarray for the simultaneous detection and identification of 12 bacterial pathogens at the species level. The broad-range PCR primer mixture was designed using conserved regions of the bacterial topoisomerase genes gyrB and parE. The primer design allowed the use of a novel DNA amplification method, which produced labeled, single-stranded DNA suitable for microarray hybridization. The probes on the microarray were designed from the alignments of species- or genus-specific variable regions of the gyrB and parE genes flanked by the primers. We included mecA-specific primers and probes in the same assay to indicate the presence of methicillin resistance in the bacterial species. The feasibility of this assay in routine diagnostic testing was evaluated using 146 blood culture positive and 40 blood culture negative samples.

Explanation:

Results

Comparison of our results with those of a conventional culture-based method revealed a sensitivity of 96% (initial sensitivity of 82%) and specificity of 98%. Furthermore, only one cross-reaction was observed upon investigating 102 culture isolates from 70 untargeted bacteria. The total assay time was only three hours, including the time required for the DNA extraction, PCR and microarray steps in sequence.

3 0
3 years ago
The temperature of Mercury is not regulated and the atmosphere easily floats away while being
Volgvan

the temperature of mercury is not regulated and the atmosphere easily floats away while being replaced with solar wind .

Mercury has a thin atmosphere.

7 0
3 years ago
14. What organisms are similar to protists?
Ber [7]

Answer: Bacteria and archaea are prokaryotes, while all other living organisms protists, plants, animals and fungi  are eukaryotes. Many diverse organisms including algae, amoebas, ciliates (such as paramecium) fit the general moniker of protist.

Explanation:

7 0
2 years ago
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