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Dvinal [7]
3 years ago
5

Compare physical feature of freshwater and marine cetaceans. Speculate how those physical differences might provide advantages t

o survival in freshwater versus marine environments.
Biology
1 answer:
rusak2 [61]3 years ago
3 0

<span>Marine mammals can be classified as animal that lives partially or wholly on coastal waters or oceans from survival while fish can be classified as a cold blooded gill bearing, egg producing species. However, whales survive by the development of echolacation, modified lungs, thick layers of blubber and lager arteries  among other things to ensure their prosperity and survival.</span>

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If you are performing this test on an unknown organism why is it a good idea to run simultaneous
AlexFokin [52]
The question seem to be incomplete but I found the complete question which is:
If you are performing this test on an unknown organism, why is it a good idea to run simultaneous tests on known phenylalanine-positive and phenylalanine-negative organisms?

Here is the Answer:

Inoculation of a positive control and success from it includes certainty to negative outcomes on an unknown organism. That is, you know the test is working effectively, so the negative outcome is most likely precise. Without the positive control, there is dependably a component of uncertainty whether the negative outcome is a genuine negative or a false negative. performing the test on a known phenlalanine-negative organism is valuable in that it exhibits what a negative outcome looks like.
7 0
3 years ago
What is natural selection?
telo118 [61]

Answer:

i think the answer is A

Explanation:

more likely

8 0
3 years ago
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The table shiws data for two groups of plants, one grown with fertilizer and the other without fertilizer​
Yakvenalex [24]

Answer:

33.5

Explanation:

the mean height is the average. Simply add up the height of all the plants with fertilizer and divide by 5 (Being the amount of plants with fertilizer)

30.5+32.1+40.6+30.5+33.8 = 167.5

167.5/5 = 33.5

AH(average height)= 33.5

3 0
3 years ago
Reproduction is one of the characteristics of life. Which of the following choices is an example of reproduction?
snow_tiger [21]

Answer:

C, bacterial cells dividing

Explanation:

because these are simple, one celled organism, they don't reproduce with male and female, instead they go through mitosis which is when a cell divides into two to reproduce. while A does include this, since skin belongs to a bigger organism it doesn't count as reproduction. B talks about development/growth, and D talks about something completely different to reproduction. hope it helped

3 0
3 years ago
Search online to find at least two articles that have opposite opinions on the repeated breeding of pedigree dogs. Does one arti
tatyana61 [14]

lol I think we go to the same school

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3 years ago
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