Acidity is determined using a pH indicator
Explanation:
The embryonic stage is the third to the eighth week after fertilization. that should be the ansewr
The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
Answer:
The X and Y sex chromosomes
Explanation:
Answer:
operant conditioning
Explanation:
In operant conditioning, organisms learn to associate events that repeatedly happen together. The word "operant" should be changed to the word "classical." any relatively permanent change in behavior brought about by experience or practice.
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