Examlex
Draw and name all stable molecules with the formula C5H12.
Optimism
A mental attitude characterized by hope and confidence in success and a positive future.
Hardiness
A personality trait characterized by a sense of control over events, commitment to life and work, and the courage to face stressful situations.
African Americans
A racial or ethnic group in the United States with ancestors from Africa, particularly those of Sub-Saharan African descent.
Native Americans
The indigenous peoples of the United States, including both the mainland and the non-contiguous territories.
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