Possible contaminate will be Proteus or Salmonella. To differentiate the two genera urease test can be accomplished. However, urease test, Proteus will produce a positive test result.
This test can be done to determine the ability of an organism to split urea. The principle of urease test is that urea is the product of decarboxylation of amino acid. Splitting of urea via hydrolysis will produce ammnonia and CO2. The CO2 produce allows the formation of bubbles.
Answer:
Heat, pressure and chemistry compounds around the rocks.
Explanation:
Metamorphic rock is formed by pre-existent rocks (igneous and sedimentary, sometimes from another metamorphic rock), those rocks were modified by the effect of heat (high temperature), pressure (under the terrestrial surface) and chemistry compounds around the rocks. The physical and mineralogical composition becomes different than the original form.
This process is called metamorphism.
Answer:
The correct answer is would be - geographic isolation.
Explanation:
The geographic isolation is also known as the speciation in which biological species experience genetic changes and on the basis of the genetic changes that experienced this separated with other organisms of the species.
It is physical separation or speciation of the biological organisms on the basis of geographical barriers of two population of the same species that keep them from interbreeding and reproducing.
Thus, the correct answer is - geographical barriers.
