I believe the answer is a
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19 = Wave Length
20 = Compression
21 = Rare Fraction
22 = Displacement
23 = Crest
24 = Wave Length
25 = Trough
Radioactive elements comprise a majority of the "ACTINIDES"
These are elements in the bottom row of the periodic table.
Answer:
Individual-level protective factors
Explanation:
Psychological resilience is the ability of the humans to recover very quickly from the difficult situation mentally and socially.
The traits shown by the resilient person are due to self-esteem, problem-solving skills, good health, self concept and many others which are considered individual-level protective factors as these factor help increase the well being of the individual.
Thus, individual-level protective factors are the correct answer.
