The substance must be able to alter its physical characteristic (for example, its color) in accordance to a change in pH. One example of this is litmus paper, which becomes red under acidic conditions and blue under basic conditions.
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Answer:
B
Explanation:
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Answer:
DNA synthesis occurs in the 5′ → 3′ direction only and requires a large suite of specialized enzymes.
Explanation:
Answer:
after nutrients are absorbed during digestion,the excretory system removes faeces through the rectum. these work together to maintain oxygen homeostasis.
