Viruses are not considered living because they cannot survive without a host organism, and they do not exhibit the characteristics of life.
Answer:
B
Explanation:
Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a method of separating molecules based on the difference of their molecular weight.
Answer:
C. The upper part of the water column represents areas of high sunlight penetration.
Explanation:
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Every species exhibits variations based on various genes being activated at various times. An example with humans can be eye color or hair color. What species means is that all members of a species can procreate with healthy, capable of procreating progeny, but anything else is just a variation.
The answer is
D. Repeated trials
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