Examlex
Which of the following characteristics should have been possessed by the first animals to colonize land?
1) were probably herbivores (ate photosynthesizers)
2) had four appendages
3) had the ability to resist dehydration
4) had lobe-finned fishes as ancestors
5) were invertebrates
Hierarchy of Needs
A psychological theory proposed by Abraham Maslow that describes a five-tier model of human needs, from basic physiological needs to self-actualization.
Physical Safety
Measures and precautions taken to protect one's body from harm or injury.
Close Friendships
Deep and intimate relationships characterized by mutual respect, affection, and support.
Arousal Theory
A theory suggesting that people are motivated to maintain an optimal level of arousal, which varies among individuals.
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