1) Prefix "a-" means "without, not". The meaning of the word "apathetic" is "without emotion or feeling";
2) In the word "analgesic", prefix "a-" denotes the process of removing or eliminating something. So, "analgesic" means "a medicine to remove pain";
3) Prefix "ex-" has the meaning "out". That is why, the word "expulsion" is defined as "to drive out";
4) Prefix "endo-" means "inside, within". Consequently, "endodermis" is the name of the inner layer of skin.
Answer:these changes, no matter whether they seem good or bad at the time, will teach you something new. External change makes you more flexible, more understanding and prepares you for the future. Just as internal change will encourage you to progress, external change will give you the experience and drive to push forward.
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