<span>A collection of mechanisms, behaviors and physiological processes that prevent the members of two different species that cross or mate from producing offspring, or which ensure that any offspring that may be produced are sterile :)</span>
The first and the fourth test tube exhibit a redish/brown color and the second and third test tubes show a dark blue/black color.
This variation exists due to the fact that amylase was added to the first and fourth test tubes. Amylase acts upon starch and breaks it down to simpler molecules. Therefore, when the IKI solution is added to check for the presence of starch, a negative result is shown. Meanwhile, the starch in the second and third test tubes remained and the IKI test showed a positive result for the presence of starch.
Answer:
1.a ,Organism
18. Biosphere
19.b,ecosystem
31.a,Has a high heat capacity and therefore helps maintain a constant body temperature
46.c,repair tissue
49.d,all of the above
7.d,All atoms of an element contain the same number of protons
Answer:
The moon is In between earth and the sun
Explanation:
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